AT88426B
(en )
1922-05-10
Process for processing manganese-containing slags and ores.
CH79341A
(en )
1918-11-01
Method and device for the extraction of shale oils
CH79987A
(en )
1919-02-01
Method and device for the electrical heating of rivets
CH81453A
(en )
1919-06-16
Method and device for registering loose documents and the like
CH81899A
(en )
1919-12-16
Extraction process and facility for carrying out the process
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH81220A
(en )
1919-10-16
Suction apparatus for the detection and treatment of diseases and for laboratory work
CH77115A
(en )
1918-03-01
Process for the evaporation of liquids and liquids containing liquids
CH79338A
(en )
1919-03-17
Process and apparatus for the electrolytic production of mercury oxide
CH81445A
(en )
1919-06-16
Process for the evaporation of liquids
CH80097A
(en )
1919-06-02
Methods for igniting liquid air cartridges and the like
CH81525A
(en )
1919-11-01
Method and device for the manufacture of screw connections for electrodes for melting furnaces and the like
CH78308A
(en )
1918-07-01
Process and device for the production of dry fuels
CH82598A
(en )
1920-03-01
Method and device for the electrical treatment of gases and vapors
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
CH81561A
(en )
1919-11-17
Process for the preparation of 4-chloro-7-methoxyisatin
CH81554A
(en )
1919-11-17
Process for the preparation of 5-methyl-7-chloroisatin
CH81558A
(en )
1919-12-01
Process for the preparation of 4-7-dichloroisatin
CH81555A
(en )
1919-11-17
Process for the preparation of 5-chloro-7-methylisatin
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
CH81552A
(en )
1919-11-01
Process for the preparation of 4-methyl-7-chloroisatin
CH81559A
(en )
1919-11-17
Process for the preparation of 4-6-dichloroisatin
CH80637A
(en )
1919-08-16
Process for the preparation of 4-7-dimethylisatin