CH74792A
(en )
1917-04-16
Process for the production of tungsten wires
CH72948A
(en )
1916-08-01
Process for the production of reversible shoes
AT88396B
(en )
1922-05-10
Process for the production of iron-free hard alloys.
CH57546A
(en )
1913-01-16
Process for the production of size
CH68831A
(en )
1915-04-16
Process for the production of borofluorotassium
CH76711A
(en )
1918-05-16
Process for the production of wire drawing dies
CH63365A
(en )
1914-01-16
Process for the production of nitrocellulose
CH58518A
(en )
1913-03-17
Process for the production of filament lamp wires
CH74900A
(en )
1917-05-01
Process for the manufacture of pneumatic jackets
CH66000A
(en )
1914-08-01
Process for the production of incandescent bodies
CH72824A
(en )
1916-07-01
Process for the production of nitrogen compounds
CH68153A
(en )
1915-02-16
Process for the production of fuel
CH72628A
(en )
1916-06-16
Process for the production of antimonies
AT75645B
(en )
1919-02-25
Process for the production of two or more part porcelain insulators.
CH72174A
(en )
1916-04-17
Process for the production of enamels
CH72958A
(en )
1916-07-17
Process for the production of sodium percarbonate
CH63494A
(en )
1914-02-02
Process for the production of components
CH67004A
(en )
1914-11-02
Process for the manufacture of explosives
AT75547B
(en )
1919-02-25
Process for the production of disinfectants.
CH75450A
(en )
1917-08-01
Process for the production of floor wax
CH75154A
(en )
1917-06-01
Process for the production of shaped pieces from fodder
CH80466A
(en )
1919-03-01
Process for the manufacture of tungsten incandescent lamps
CH73574A
(en )
1916-10-16
Process for the production of oxygen
CH57979A
(en )
1913-02-17
Process for the production of hydrogen
CH57533A
(en )
1913-01-16
Process for the production of hydrogen