BE576338A
(en )
1959-07-01
Improvements in the manufacture of threads.
FR1147722A
(en )
1957-11-28
Improvement in the manufacture of graft vinyl polymers
BE592605A
(en )
1961-01-04
Improvements in the manufacture of catalysts
BE599612A
(en )
1961-07-27
Improvements in the production of polymeric substances
BE595689A
(en )
1961-02-01
Improvements in shoe manufacturing
FR1268191A
(en )
1961-07-28
Improvement in the polymerization of aldehydes
BE610364A
(en )
1962-05-16
Improvements in the production of polyoxymethylene.
FR1248904A
(en )
1960-12-23
Improvements in the production of ethylene polymers
BE594399A
(en )
1961-02-27
Improvements in the manufacture of polymer materials.
FR1251365A
(en )
1961-01-20
Prefections in the manufacture of plastic sheets
BE596789A
(en )
1961-03-01
Improvement in the polymerization of aldehydes.
FR1255966A
(en )
1961-03-17
Improvements in the manufacture of catalysts
FR75546E
(en )
1961-07-07
Improvements in the manufacture of construction panels
FR1201853A
(en )
1960-01-06
Improvements in the manufacture of artificial filaments
FR1249888A
(en )
1961-01-06
Improvements in the manufacture of plastic <<glazing>>
FR1173735A
(en )
1959-03-02
Improvements in the manufacture of pentaerythritis
BE574877A
(en )
1959-07-20
Improvements in the manufacture of cellular polymeric materials.
BE602239A
(en )
1961-10-05
Improvements in the production of polymer materials.
BE594858A
(en )
1961-03-08
Improvements in the manufacture of zippers.
FR1224832A
(en )
1960-06-27
Improvements in the manufacture of gelatin
BE610585A
(en )
1962-05-21
Improvements in the manufacture of thermoplastic sheet materials
FR1146868A
(en )
1957-11-15
Improvements in the manufacture of polymer materials
BE596614A
(en )
1961-05-02
Improvements in the making of beer.
FR1303752A
(en )
1962-09-14
Improvements in the manufacture of thermoplastic films
FR1256826A
(en )
1961-03-24
Improvements in the manufacture of junction transistors