CH81899A
(en )
1919-12-16
Extraction process and facility for carrying out the process
CH83126A
(en )
1919-11-17
Process for purifying the anthraquinone
CH78963A
(en )
1918-09-16
Process and device for the reduction of ores
CH78308A
(en )
1918-07-01
Process and device for the production of dry fuels
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH78688A
(en )
1918-08-16
Soldering iron and process for its manufacture
CH82253A
(en )
1919-09-16
Device for destroying foam
CH79987A
(en )
1919-02-01
Method and device for the electrical heating of rivets
AT88456B
(en )
1922-05-10
Process for the production of perylene.
CH81398A
(en )
1919-11-17
Process for the extraction of minerals
CH78758A
(en )
1918-09-02
System for heating liquids
FR489468A
(en )
1919-02-08
Process for forging valves and the like
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
CH80262A
(en )
1919-02-17
Device for advancing ring-shaped bodies
CH81453A
(en )
1919-06-16
Method and device for registering loose documents and the like
CH80422A
(en )
1919-03-01
Process for the production of metal bodies
CH77895A
(en )
1918-11-01
Briquette and process for its manufacture
CH80902A
(en )
1919-04-16
Device for facilitating the tying of packages and the like
CH80085A
(en )
1919-06-02
Method and device for the production of cardboard boxes
CH79992A
(en )
1919-02-01
Process for the manufacture of articles of daily use from condensation products of phenols and aldehydes
CH83048A
(en )
1920-04-01
Device for cleaning and disinfecting telephone sets
FR520256A
(en )
1921-06-23
Guilloche process and device
CH82939A
(en )
1919-11-01
Briquette and process for its manufacture
AT88426B
(en )
1922-05-10
Process for processing manganese-containing slags and ores.
CH78230A
(en )
1918-07-01
Device for the production of briquettes