CH78789A
(en )
1918-09-02
Electro-osmotic drainage method
FR507810A
(en )
1920-09-24
Transhipment facility
CH78546A
(en )
1918-08-01
Device for electroosmotic drainage
CH79177A
(en )
1918-10-16
Device for electroosmotic drainage
CH79066A
(en )
1918-10-01
Process for the extraction of oil
CH76373A
(en )
1917-12-01
Process for the preparation of glycolyl-p-phenetidide
CH80786A
(en )
1919-04-01
Method of making masonry
CH80637A
(en )
1919-08-16
Process for the preparation of 4-7-dimethylisatin
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
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
CH81558A
(en )
1919-12-01
Process for the preparation of 4-7-dichloroisatin
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
CH80641A
(en )
1919-08-16
Process for the preparation of 7-methylisatin
CH80638A
(en )
1919-08-01
Process for the preparation of 5-7-dimethylisatin
CH79146A
(en )
1918-10-01
Method of making briquettes
CH80636A
(en )
1919-08-16
Process for the preparation of methyl pseudoisatin
CH78502A
(en )
1918-12-16
Process for the preparation of hydroquinine
CH78380A
(en )
1918-11-16
Process for the preparation of hydrocodeine
CH81445A
(en )
1919-06-16
Process for the evaporation of liquids
AT100191B
(en )
1925-06-10
Process for preparing gels.
CH80632A
(en )
1919-08-01
Process for the preparation of 5-bromoisatin