AT88426B
(en )
1922-05-10
Process for processing manganese-containing slags and ores.
CH78963A
(en )
1918-09-16
Process and device for the reduction of ores
AT88456B
(en )
1922-05-10
Process for the production of perylene.
CH78964A
(en )
1918-09-16
Process for smelting smelting materials
CH78798A
(en )
1918-09-02
Process for the partial tinning of sheet metal
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH81899A
(en )
1919-12-16
Extraction process and facility for carrying out the process
AT87474B
(en )
1922-02-25
Process for the production of mercury oxide.
CH80401A
(en )
1919-07-16
Process for drying potatoes
AT91345B
(en )
1923-02-26
Process for the production of iron leather.
AT87383B
(en )
1922-02-25
Device for processing ores using the foam floating method.
AT82952B
(en )
1921-02-25
Process for creating chains.
AT57735B
(en )
1913-02-25
Floating process for processing sulphidic ores.
CH80422A
(en )
1919-03-01
Process for the production of metal bodies
CH83126A
(en )
1919-11-17
Process for purifying the anthraquinone
FR520529A
(en )
1921-06-27
Ore concentration process
CH81398A
(en )
1919-11-17
Process for the extraction of minerals
CH81554A
(en )
1919-11-17
Process for the preparation of 5-methyl-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
CH80633A
(en )
1919-08-01
Process for the preparation of 7-chloroisatin