CH81318A
(en )
1919-06-02
Process for the production of an acid-resistant and waterproof mass
CH80964A
(en )
1919-09-16
Process for the production of high percentage solutions of calcium nitrate
CH78308A
(en )
1918-07-01
Process and device for the production of dry fuels
CH80239A
(en )
1919-02-17
Process for the production of ebonite
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
CH80791A
(en )
1919-04-16
Structure and method of manufacturing the same
CH78971A
(en )
1918-09-16
Process for the production of spur and helical gears
CH82936A
(en )
1919-11-01
Key and method of making the same
CH80422A
(en )
1919-03-01
Process for the production of metal bodies
CH78104A
(en )
1918-10-16
Process for the production of mercury oxide
CH79296A
(en )
1919-04-01
Process for the production of shaped pieces from magnesia cement
CH79146A
(en )
1918-10-01
Method of making briquettes
CH79954A
(en )
1919-01-16
Process for the production of coffee substitutes
CH79801A
(en )
1919-01-16
Process for the production of solid sodium percarbonate
CH80635A
(en )
1919-09-01
Process for the preparation of ethyl pseudoisatin
CH80810A
(en )
1919-04-16
Process for the manufacture of locking pins
CH80094A
(en )
1919-02-01
Process for the production of sodium percarbonate
CH79489A
(en )
1918-12-02
Process for the production of copper compounds
CH82599A
(en )
1919-10-01
Process for the preparation of per compounds
CH80633A
(en )
1919-08-01
Process for the preparation of 7-chloroisatin
CH80637A
(en )
1919-08-16
Process for the preparation of 4-7-dimethylisatin
CH80638A
(en )
1919-08-01
Process for the preparation of 5-7-dimethylisatin
CH80641A
(en )
1919-08-16
Process for the preparation of 7-methylisatin
CH81551A
(en )
1919-11-01
Process for the preparation of 4-chloro-7-methylisatin
CH81552A
(en )
1919-11-01
Process for the preparation of 4-methyl-7-chloroisatin