CH79643A
(en )
1919-04-16
Method of preserving cheese
CH81006A
(en )
1919-05-01
Method of preserving wood
CH77658A
(en )
1918-05-16
Method of preserving food
CH77461A
(en )
1918-04-16
Method of packaging hard herb cheese
CH83286A
(en )
1919-11-17
Procedure for sealing preservation vessels
CH80401A
(en )
1919-07-16
Process for drying potatoes
CH79648A
(en )
1918-12-16
Process for evaporation of liquids
CH79302A
(en )
1918-11-01
Method of draining peat
CH78645A
(en )
1919-02-01
Method of draining peat
CH80578A
(en )
1919-08-01
Process for the operation of gear drives
CH80043A
(en )
1919-02-01
Method of building and stacking watercraft
CH76802A
(en )
1918-07-01
Method of tightening intestines
CH78964A
(en )
1918-09-16
Process for smelting smelting materials
CH80093A
(en )
1919-09-01
Device for preserving food subject to deterioration
CH81398A
(en )
1919-11-17
Process for the extraction of minerals
CH79146A
(en )
1918-10-01
Method of making briquettes
CH75755A
(en )
1918-02-16
Method for dividing containers
CH82032A
(en )
1919-08-16
Process for roasting fibrous materials
CH80633A
(en )
1919-08-01
Process for the preparation of 7-chloroisatin
CH81551A
(en )
1919-11-01
Process for the preparation of 4-chloro-7-methylisatin
CH81555A
(en )
1919-11-17
Process for the preparation of 5-chloro-7-methylisatin
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
CH81552A
(en )
1919-11-01
Process for the preparation of 4-methyl-7-chloroisatin
CH81558A
(en )
1919-12-01
Process for the preparation of 4-7-dichloroisatin