CH44730A
(en )
1909-09-01
Process for the regeneration of blackened carbon filament light bulbs
CH48516A
(en )
1910-11-01
Process for the production of gas incandescent light bulbs
CH52472A
(en )
1911-11-16
Process for the production of filament lamps
ES45247A1
(en )
1909-05-16
Procedure and apparatus for the regeneration of blackened carbon filament lamps of any manufacture.
CH46765A
(en )
1910-04-16
Metal filament brackets for electric light bulbs and method of making the same
AT26305B
(en )
1906-11-10
Process for the production of self-regenerating carbon filaments for electric light bulbs.
FR15274E
(en )
1912-06-03
Process for the regeneration of blackened carbon filament electric lamps
CH59749A
(en )
1913-06-02
Process for manufacturing incandescent mantles
CH70971A
(en )
1915-11-16
Process for the production of incandescent bodies for hanging incandescent light
CH41966A
(en )
1908-12-16
Process for the production of carbon-free incandescent lamp filaments
CH65431A
(en )
1914-06-16
Process for the production of filament lamps
CH58518A
(en )
1913-03-17
Process for the production of filament lamp wires
CH80466A
(en )
1919-03-01
Process for the manufacture of tungsten incandescent lamps
FR401669A
(en )
1909-09-08
Process for the regeneration of blackened carbon filament electric lamps
CH42245A
(en )
1909-01-16
Process for manufacturing incandescent mantles
CH42403A
(en )
1909-02-01
Process for manufacturing incandescent mantles
AT41100B
(en )
1910-02-25
Process for the production of an aluminum solder.
CH43541A
(en )
1909-05-17
Process for the production of metal-containing filaments for electric incandescent lamps
FR421724A
(en )
1911-03-03
Process for the regeneration of carbon filament lamps
CH45392A
(en )
1909-11-16
Process for the production of incandescent bodies for gas incandescent light
CH44150A
(en )
1909-07-01
Method and device for regulating blackened carbon filament light bulbs
AT25226B
(en )
1906-08-10
Process for the production of gas incandescent light stumps.
CH46247A
(en )
1910-02-16
Process for the production of filaments from tungsten metal for incandescent lamps
CH49431A
(en )
1911-02-01
Process for the production of asbestos filters
AT32814B
(en )
1908-05-11
Process for the production of metallic illuminants for electric light bulbs.