| 304 | IV B | 23.VII.1958 | 23 |
| Abberly, Nicholas Rippen. [ 3 fol. ] | |
| 305 | IV B | 26.IX.1958, 10.X.1958 | 23 |
| Anders, Walter. [ 4 fol. ] | |
| 306 | IV B | 1958–1961 | 23 |
| ARCOS, Société anonyme, Brusel. [ 22 fol. ] | |
| 307 | IV B | 30.VI.1961 | 23 |
| Autóközlekédési tudomanyos kutató, Budapešť. [ 5 fol. ] | |
| 308 | IV B | 3.VI.1958, 3.XI.1958, 4.XI.1958 | 23 |
| Bardin, I. P. [ 3 fol. ] | |
| 309 | IV B | 30.X.1958 | 23 |
| Bittera, Eugen. [ 3 fol. ] | |
| 310 | IV B | 28.II.1957, 14.I.1958 | 23 |
| Blagonzavov, A. A. [ 3 fol. ] | |
| 311 | IV B | 14.II.1958 | 23 |
| Böhler, Gebr. [ 3 fol. ] | |
| 312 | IV B | 28.IX.1958 | 23 |
| Construktions métalliques de Provence, Arles. [ 4 fol. ] | |
| 313 | IV B | 30.IV.1958 | 23 |
| Csergö, János. [ 6 fol. ] | |
| 314 | IV B | 8.II.1951 | 23 |
| Československé huti, Praha. [ 1 fol. ] | |
| 315 | IV B | 8.XII.1958 | 23 |
| Danhier, François. [ 3 fol. ] | |
| 316 | IV B | 12.V.1958 | 23 |
| Deutsche Vakuumapparate, Sangerhausen, NDR. [ 2 fol. ] | |
| 317 | IV B | 28.VI.1958, 12.XII.1958, 31.XII.1958 | 23 |
| Deutsche Verband für Schweisstechnik, Düsseldorf. [ 10 fol. ] | |
| 318 | IV B | 25.V.1961 | 23 |
| Deutscher Verlag für Schweisstechnik, Düsseldorf. [ 6 fol. ] | |
| 319 | IV B | 17.XII.1958 | 23 |
| Dom naučno-techničeskoj propagandy, Moskva. [ 2 fol. ] | |
| 320 | IV B | 4.VIII.1961, 8.VIII.1961 | 23 |
| Dreher, prof. [ 3 fol. ] | |
| 321 | IV B | 8.VI.1959 | 23 |
| Družstvo za varilno techniko LRS, Ljubljana. [ 2 fol. ] | |
| 322 | IV B | | 23 |
| DVS Düsseldorf. [ 7 fol. ] | |
| 323 | IV B | 14.VI.1961, 21.VI.1961 | 23 |
| Edström, Walter. [ 5 fol. ] | |
| 324 | IV B | 1958–1961 | 23 |
| Erdmann–Jesnitzer, F. [ 18 fol. ] | |
| 325 | IV B | 2.V.1958 | 23 |
| Friedrich, Eva. [ 2 fol. ] | |
| 326 | IV B | 29.VIII.1958 | 23 |
| Gépipari tudományos egyesület, Budapešť. [ 1 fol. ] | |
| 327 | IV B | 14.IV.1959 | 23 |
| Giesmann, Joachim Ernst. [ 1 fol. ] | |
| 328 | IV B | 29.I.1959, 9.I.1961 | 23 |
| Gilde, Werner. [ 8 fol. ] | |
| 329 | IV B | 18.VII.1959, 7.IV.1961 | 23 |
| Gillemot, Ladislaus. [ 6 fol. ] | |
| 330 | IV B | 24.I.1959, 27.I.1959 | 23 |
| Hanson, Axel. [ 6 fol. ] | |
| 331 | IV B | 27.VIII.1959 | 23 |
| Haufe, Kurt. [ 1 fol. ] | |
| 332 | IV B | 1958–1961 | 23 |
| Hochschule für Schwermaschinenbau, Magdeburg. [ 10 fol. ] | |
| 333 | IV B | 28.IV.1958, 11.VI.1958 | 23 |
| Haudremont, Maria. [ 4 fol. ] | |
| 334 | IV B | 3.I.1959 | 23 |
| Hummitzch, W. [ 1 fol. ] | |
| 335 | IV B | 3.VII.1959 | 23 |
| Chrenov, K. K. [ 1 fol. ] | |
| 336 | IV B | 14.IX.1959 | 23 |
| Chruščov, N. S. [ 1 fol. ] | |
| 337 | IV B | 21.I.1959 | 24 |
| Institut elektronnych upravľajjuščich mašin Akademii nauk ZSSR, Moskva. [ 1 fol. ] | |
| 338 | IV B | 24.VI.1953 | 24 |
| Institut international de la soudure Jugoslavija. [ 1 fol. ] | |
| 339 | IV B | 22.VII.1959 | 24 |
| Kammer der Technik, Berlin. [ 1 fol. ] | |
| 340 | IV B | 14.VI.1958 | 24 |
| Kerkhof, W. P. [ 2 fol. ] | |
| 341 | IV B | | 24 |
| Kiricev, A. [ 1 fol. ] | |
| 342 | IV B | 1957–1961 | 24 |
| Koch, Helmut. [ 7 fol. ] | |
| 343 | IV B | 14.IV.1958, 5.VII.1958, 26.VII.1958 | 24 |
| Kornilov, I. I. [ 3 fol. ] | |
| 344 | IV B | 13.VII.1958 | 24 |
| Latsantechmontaž, Riga. [ 2 fol. ] | |
| 345 | IV B | 7.III.1958 | 24 |
| Lercy M.A.G.P. [ 2 fol. ] | |
| 346 | IV B | 27.VI.1959 | 24 |
| Maštovský, Otakar. [ 1 fol. ] | |
| 347 | IV B | 9.VII.1958 | 24 |
| Matting, A. [ 3 fol. ] | |
| 348 | IV B | 15.XI.1958, 4.XII.1959 | 24 |
| Miclosi, Cernélii. [ 8 fol. ] | |
| 349 | IV B | 2.VIII.1961 | 24 |
| Million, Karol. [ 6 fol. ] | |
| 350 | IV B | 7.VIII.1959 | 24 |
| Ministerium für Schwermaschinenbau, Bukurest. [ 4 fol. ] | |
| 351 | IV B | 23.I.1958, 1.IV.1958, 2.IV.1958 | 24 |
| Müszaki és természettudományi egyesületek szövetsége, Budapest. [ 4 fol. ] | |
| 352 | IV B | 1.IX.1961 | 24 |
| Naučno-isledovateľskij institut avtomobilovo transporta, Budapest. [ 2 fol. ] | |
| 353 | IV B | 1.IV.1959 | 24 |
| Naučno-isledovateľskij institut technologiji i mašinostrojenija, Peking. [ 2 fol. ] | |
| 354 | IV B | 30.X.1959 | 24 |
| Nutting, Jack. [ 5 fol. ] | |
| 355 | IV B | 28.VIII.1961, 25.VI.1968 | 24 |
| Österreichische Gesellschaft für Schweisstechnik, Viedeň. [ 2 fol. ] | |
| 356 | IV B | 1958 | 24 |
| Paton, B. O. [ 12 fol. ] | |
| 357 | IV B | 1.VIII.1961 | 24 |
| Pavlov, Pavel Adamov. [ 3 fol. ] | |
| 358 | IV B | 28.IV.1958 | 24 |
| Povereníctvo školstva, Bratislava. [ 1 fol. ] | |
| 359 | IV B | 29.I.1958, 27.VII.1959 | 24 |
| Radojkovič, Milan. [ 4 fol. ] | |
| 360 | IV B | 18.VIII.1958, 11.XI.1958 | 24 |
| Rapatz, F. [ 4 fol. ] | |
| 361 | IV B | 16.XI.1959 | 24 |
| Redakcia časopisu Chan-Ze, Peking. [ 2 fol. ] | |
| 362 | IV B | 25.VI.1958, 22.IX.1958 | 24 |
| Rigó, Károly. [ 2 fol. ] | |
| 363 | IV B | 21.III.1959 | 24 |
| Rjabov, B. P. [ 1 fol. ] | |
| 364 | IV B | 3.VIII.1961 | 24 |
| Rumunské veľvyslanectvo, Praha. [ 3 fol. ] | |
| 365 | IV B | 1959 | 24 |
| Sályi, István. [ 2 fol. ] | |
| 366 | IV B | 1961 | 24 |
| Samarin. [ 2 fol. ] | |
| 367 | IV B | 7.XI.1960, 26.VI.1961 | 24 |
| Sattler, K. [ 4 fol. ] | |
| 368 | IV B | 29.VIII.1959 | 24 |
| Séférian, D. [ 4 fol. ] | |
| 369 | IV B | 6.VII.1958 | 24 |
| Scheidische Silot Gesellschaft, Viedeň. [ 2 fol. ] | |
| 370 | IV B | 1959–1961 | 24 |
| Scheibold, Ernst. [ 11 fol. ] | |
| 371 | IV B | 3.I.1958, 8.I.1958 | 24 |
| Schnidt, Paul. [ 4 fol. ] | |
| 372 | IV B | 25.X.1958 | 24 |
| Schweisstechnische Zentralanstalt, Viedeň. [ 9 fol. ] | |
| 373 | IV B | 15.V.1961, 28.VI.1961 | 24 |
| Schweisstechnik, Düsseldorf. [ 5 fol. ] | |
| 374 | IV B | 22.VII.1959 | 24 |
| SIMP, Sekcia spawalnistwa, Varšava. [ 1 fol. ] | |
| 375 | IV B | 26.IX.1952 | 24 |
| Slovenská akadémia vied a umení, Bratislava. [ 1 fol. ] | |
| 376 | IV B | 17.I.1958 | 24 |
| Sniegoň, Karol. [ 1 fol. ] | |
| 377 | IV B | 29.X.1959 | 24 |
| Société génerale des construktions électiques et mécaniques, Belfort. [ 11 fol. ] | |
| 378 | IV B | 11.II.1959 | 24 |
| Sessenheimer, Heinz. [ 2 fol. ] | |
| 379 | IV B | 4.XII.1958, 6.XII.1958 | 24 |
| La Soudure Electrique Autogéne S.A., Brusel. [ 3 fol. ] | |
| 380 | IV B | 27.IX.1958 | 24 |
| Strojexport, Praha. [ 2 fol. ] | |
| 381 | IV B | 26.IV.1950 | 24 |
| Tatrasvit, Svit. [ 1 fol. ] | |
| 382 | IV B | 29.VI.1967 | 24 |
| Teller, W. A. [ 1 fol. ] | |
| 383 | IV B | 3.VIII.1959 | 24 |
| Transelektro, Budapest. [ 1 fol. ] | |
| 384 | IV B | 10.VII.1959 | 24 |
| Tribunal Militaire, Athénes. [ 2 fol. ] | |
| 385 | IV B | 6.VII.1959 | 24 |
| Ústredný výbor KSS. [ 1 fol. ] | |
| 386 | IV B | 5.VIII.1959 | 24 |
| Vasipari Kutató Intézet, Budapest. [ 2 fol. ] | |
| 387 | IV B | 24.VII.1959, 10.XI.1959 | 24 |
| VEB Fördenwagenbau Vetschau, Sprumwald. [ 5 fol. ] | |
| 388 | IV B | 2.IX.1969 | 24 |
| Vítkovícké železárny, Ostrava. [ 1 fol. ] | |
| 389 | IV B | 1958–1959 | 24 |
| Zentralinstitut für Schweisstechnik, Halle–Saale. [ 10 fol. ] | |
| 390 | IV B | 3.VI.1959, 7.IV.1961 | 24 |
| Zarköczy, Béla. [ 2 fol. ] | |
