SU25690A1
(en )
1932-03-31
A method of manufacturing shaped unbreakable glass
CH138306A
(en )
1930-02-28
Yeast manufacturing process.
SU25644A1
(en )
1932-03-31
Radio
SU22956A1
(en )
1931-09-30
Glasses
SU19683A1
(en )
1931-03-31
Method of making telephone cords
FR715009A
(en )
1931-11-24
Chlorobenzol manufacturing process
ES117455A1
(en )
1930-04-16
Chocolate manufacturing process.
ES120707A1
(en )
1930-12-16
A fire-flame manufacturing process.
FR709823A
(en )
1931-08-13
Formaldehyde production
FR714322A
(en )
1931-11-12
Ammonia manufacturing process
ES120124A1
(en )
1931-01-01
Method of manufacturing stops.
FR706934A
(en )
1931-07-01
The espadrilles manufacturing process
ES119646A1
(en )
1930-12-01
A pipe manufacturing process.
FR38085E
(en )
1931-03-19
Imino-ethers manufacturing process
ES117732A1
(en )
1930-06-16
Method of manufacturing molded objects, especially polishing media.
DK45440C
(en )
1932-03-29
Automatic Machine for Glass Manufacturing.
FR724934A
(en )
1932-05-04
Process for the production of 1.4-diaminoanthraquinone
FR690495A
(en )
1930-09-20
Chocolate manufacturing process
FR700935A
(en )
1931-03-09
Manufacturing process for butyric aldehyde
CH151973A
(en )
1932-01-15
Film manufacturing process.
ES117547A3
(en )
1930-05-01
A method of manufacturing rubber articles by dipping.
ES122812A1
(en )
1931-06-01
Candy manufacturing process.
FR706715A
(en )
1931-06-29
Chain manufacturing process
ES119627A1
(en )
1931-02-01
A new curtain manufacturing process.
ES122169A1
(en )
1931-04-16
Mosaic manufacturing process.