CH80231A
(en )
1919-02-17
Process for the preparation of metal sulphides by electrolysis
FR515727A
(en )
1921-04-06
Process for preparing metal alloys
FR521891A
(en )
1921-07-21
Process for the preparation of pyridic bases
FR497983A
(en )
1919-12-23
Process for obtaining decorative surfaces
FR496593A
(en )
1919-11-11
Process for the continuous preparation of nitric anhydride
FR485762A
(en )
1918-02-06
Improved process for the preparation of metal sulphides
FR495153A
(en )
1919-10-01
Process for preparing magnesium by electrolysis
FR519326A
(en )
1921-06-08
Method of depositing metals by electrolysis
FR486093A
(en )
1918-03-06
Process for preparing metal oxides
FR21105E
(en )
1920-05-20
Process for the production of advanced metal alloys
FR507697A
(en )
1920-09-21
Process for the preparation of ethers of polysbacic acids
FR498222A
(en )
1920-01-06
Process for the production of metal alloys
FR472763A
(en )
1914-12-17
Process for the production of zinc by electrolysis
FR490959A
(en )
1919-05-17
Method for the purification of anthraquinone
FR473580A
(en )
1915-01-15
Process for the electrolytic preparation of alkali metals
FR497290A
(en )
1919-12-02
Process for the production of aluminum azide
FR515595A
(en )
1921-04-04
Process for partial tinning of sheet metal
CH77536A
(en )
1919-01-02
Process for the continuous preparation of nitric anhydride
FR490274A
(en )
1919-04-15
Method of annealing metal wire by electricity
FR485510A
(en )
1918-01-16
Process for the preparation of metal arsenates
FR486096A
(en )
1918-03-06
Process for preparing metal dust
FR471444A
(en )
1914-10-26
Process for the establishment of watertight tunnels with advancement by shield
FR517548A
(en )
1921-05-07
Process of concentration by evaporation of products from cesspools
FR491354A
(en )
1919-05-31
Improved process for the preparation of oxygenates of nitrogen by treating ammonia
FR516903A
(en )
1921-04-28
Process for the preparation of sodium percarbonates