CH41966A
(en )
1908-12-16
Process for the production of carbon-free incandescent lamp filaments
CH42245A
(en )
1909-01-16
Process for manufacturing incandescent mantles
CH42403A
(en )
1909-02-01
Process for manufacturing incandescent mantles
CH48516A
(en )
1910-11-01
Process for the production of gas incandescent light bulbs
AT25226B
(en )
1906-08-10
Process for the production of gas incandescent light stumps.
AT32028B
(en )
1908-02-25
Process for the production of incandescent bodies.
AT32452B
(en )
1908-04-10
Process for the manufacture of filaments for electric light.
AT32814B
(en )
1908-05-11
Process for the production of metallic illuminants for electric light bulbs.
CH52472A
(en )
1911-11-16
Process for the production of filament lamps
CH35994A
(en )
1906-11-15
Raw filament for the production of filaments
CH40113A
(en )
1908-06-01
Metal thread for making incandescent bodies for incandescent lamps
CH45392A
(en )
1909-11-16
Process for the production of incandescent bodies for gas incandescent light
CH43541A
(en )
1909-05-17
Process for the production of metal-containing filaments for electric incandescent lamps
AT41185B
(en )
1910-02-25
Process for the production of artificial marble.
CH49382A
(en )
1911-02-01
Process for the production of magnesia cement
CH48770A
(en )
1910-12-01
Process for the production of incandescent bodies from synthetic threads
CH59749A
(en )
1913-06-02
Process for manufacturing incandescent mantles
CH49904A
(en )
1911-04-01
Process for the production of porous barium oxide
CH58518A
(en )
1913-03-17
Process for the production of filament lamp wires
CH46247A
(en )
1910-02-16
Process for the production of filaments from tungsten metal for incandescent lamps
CH65431A
(en )
1914-06-16
Process for the production of filament lamps
CH51422A
(en )
1911-09-01
Process for the production of over-spun buttons
CH66000A
(en )
1914-08-01
Process for the production of incandescent bodies
CH41583A
(en )
1908-11-02
Process for the continuous production of calcium carbide
AT27649B
(en )
1907-02-25
Process for the production of dentifrices.