CH79648A
(en )
1918-12-16
Process for evaporation of liquids
CH81445A
(en )
1919-06-16
Process for the evaporation of liquids
CH81444A
(en )
1919-06-16
Appart for evaporation of liquids
CH80401A
(en )
1919-07-16
Process for drying potatoes
CH78964A
(en )
1918-09-16
Process for smelting smelting materials
CH80578A
(en )
1919-08-01
Process for the operation of gear drives
CH74126A
(en )
1917-01-16
Process for evaporation of liquids
CH81398A
(en )
1919-11-17
Process for the extraction of minerals
CH82032A
(en )
1919-08-16
Process for roasting fibrous materials
CH82570A
(en )
1919-10-01
Process for the distillation of hydrous fuel
CH82981A
(en )
1919-11-01
Process for the production of pulp
AT88456B
(en )
1922-05-10
Process for the production of perylene.
CH81780A
(en )
1919-07-16
Process for cleaning machine oils
CH77115A
(en )
1918-03-01
Process for the evaporation of liquids and liquids containing liquids
CH79578A
(en )
1918-12-02
Process for the isolation of hyoscyamine
CH79071A
(en )
1918-10-01
Methods for cleaning the types of printing devices
CH81559A
(en )
1919-11-17
Process for the preparation of 4-6-dichloroisatin
CH81561A
(en )
1919-11-17
Process for the preparation of 4-chloro-7-methoxyisatin
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
CH81554A
(en )
1919-11-17
Process for the preparation of 5-methyl-7-chloroisatin
CH81555A
(en )
1919-11-17
Process for the preparation of 5-chloro-7-methylisatin
CH80633A
(en )
1919-08-01
Process for the preparation of 7-chloroisatin