CH77829A
(en )
1918-10-01
Novel emery compound and process for its production
CH75974A
(en )
1917-10-16
Process for the production of silicon carbide
CH75897A
(en )
1917-10-01
Process for the production of drive belts
CH79384A
(en )
1918-11-01
Bevel gear and process for its manufacture
CH76096A
(en )
1918-04-01
Process for the production of urea
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
CH75971A
(en )
1918-03-16
Process for the production of biochar which can be used as a clarifying and decolorizing agent
FR488359A
(en )
1918-09-17
Enfleurage process
CH75490A
(en )
1917-08-01
Machine for the production of briquettes
CH76711A
(en )
1918-05-16
Process for the production of wire drawing dies
CH76064A
(en )
1917-11-01
Process for the production of briquettes from sawdust
AT91423B
(en )
1923-02-26
Process for the production of helical gears consisting of several discs.
CH76592A
(en )
1918-01-16
Process for the production of fittings
CH76405A
(en )
1917-12-17
Process for the manufacture of refractory products
CH74665A
(en )
1917-04-02
Process for the production of drive belts
CH72824A
(en )
1916-07-01
Process for the production of nitrogen compounds
CH74900A
(en )
1917-05-01
Process for the manufacture of pneumatic jackets
CH76173A
(en )
1918-04-01
Process for the production of shaped pieces from coal dust
CH72958A
(en )
1916-07-17
Process for the production of sodium percarbonate
CH76779A
(en )
1918-02-01
Process for the production of pressed briquettes
CH75875A
(en )
1917-10-01
Process for the production of potassium persulfate
CH79939A
(en )
1919-01-16
Process for the production of fibers
CH77380A
(en )
1918-09-02
Waterproof leather substitute and process for its manufacture
CH75422A
(en )
1917-07-16
Process for the production of glazed asbestos-cement articles
CH75534A
(en )
1917-08-01
Process for the production of etched figures