CH78971A
(en )
1918-09-16
Process for the production of spur and helical gears
CH80964A
(en )
1919-09-16
Process for the production of high percentage solutions of calcium nitrate
CH80422A
(en )
1919-03-01
Process for the production of metal bodies
CH80714A
(en )
1919-04-01
Machine for the production of bevel gears
CH79954A
(en )
1919-01-16
Process for the production of coffee substitutes
CH80810A
(en )
1919-04-16
Process for the manufacture of locking pins
AT91423B
(en )
1923-02-26
Process for the production of helical gears consisting of several discs.
CH79146A
(en )
1918-10-01
Method of making briquettes
CH81318A
(en )
1919-06-02
Process for the production of an acid-resistant and waterproof mass
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
CH80833A
(en )
1919-04-01
Process for the production of sodium cyanate
CH80239A
(en )
1919-02-17
Process for the production of ebonite
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH80901A
(en )
1919-04-16
Process for the production of hollow bodies and hollow bodies produced by this method
CH77857A
(en )
1918-06-01
Process for the production of inulin which can be used for therapeutic purposes from plants
CH80791A
(en )
1919-04-16
Structure and method of manufacturing the same
CH76592A
(en )
1918-01-16
Process for the production of fittings
CH82936A
(en )
1919-11-01
Key and method of making the same
CH80094A
(en )
1919-02-01
Process for the production of sodium percarbonate
CH79811A
(en )
1919-01-16
Process for the production of artificial leather
CH79342A
(en )
1919-03-17
Process for the production of artificial leather
CH79489A
(en )
1918-12-02
Process for the production of copper compounds
CH80238A
(en )
1919-02-17
Process for the production of rubber-like compositions
CH77941A
(en )
1918-06-01
Process for the production of natural top view images
CH79384A
(en )
1918-11-01
Bevel gear and process for its manufacture