CH79338A
(en )
1919-03-17
Process and apparatus for the electrolytic production of mercury oxide
CH78104A
(en )
1918-10-16
Process for the production of mercury oxide
CH68991A
(en )
1915-05-17
Process and apparatus for the production of black lead
CH80239A
(en )
1919-02-17
Process for the production of ebonite
AT87474B
(en )
1922-02-25
Process for the production of mercury oxide.
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
AT96521B
(en )
1924-04-10
Process and apparatus for the production of pure furfural.
CH78963A
(en )
1918-09-16
Process and device for the reduction of ores
CH80901A
(en )
1919-04-16
Process for the production of hollow bodies and hollow bodies produced by this method
CH80964A
(en )
1919-09-16
Process for the production of high percentage solutions of calcium nitrate
CH80422A
(en )
1919-03-01
Process for the production of metal bodies
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
CH79146A
(en )
1918-10-01
Method of making briquettes
CH79954A
(en )
1919-01-16
Process for the production of coffee substitutes
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH80810A
(en )
1919-04-16
Process for the manufacture of locking pins
CH76561A
(en )
1918-01-16
Apparatus for the production of concentrated feed and the extraction of fat
CH79342A
(en )
1919-03-17
Process for the production of artificial leather
CH79811A
(en )
1919-01-16
Process for the production of artificial leather
CH80833A
(en )
1919-04-01
Process for the production of sodium cyanate
CH81318A
(en )
1919-06-02
Process for the production of an acid-resistant and waterproof mass
CH65917A
(en )
1914-08-01
Process and apparatus for the production of high percentage nitric acid
CH80094A
(en )
1919-02-01
Process for the production of sodium percarbonate
CH79489A
(en )
1918-12-02
Process for the production of copper compounds