CH40113A
(en )
1908-06-01
Metal thread for making incandescent bodies for incandescent lamps
CH41966A
(en )
1908-12-16
Process for the production of carbon-free incandescent lamp filaments
CH40114A
(en )
1908-06-01
Support for the filament of metal filament lamps
CH46247A
(en )
1910-02-16
Process for the production of filaments from tungsten metal for incandescent lamps
CH42245A
(en )
1909-01-16
Process for manufacturing incandescent mantles
CH42403A
(en )
1909-02-01
Process for manufacturing incandescent mantles
ES40459A1
(en )
1907-05-01
An improved process for the manufacture of filaments for incandescent lamps.
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.
CH45392A
(en )
1909-11-16
Process for the production of incandescent bodies for gas incandescent light
CH37954A
(en )
1907-08-15
Raw filament for the manufacture of tungsten metal filaments
CH40541A
(en )
1908-07-16
Kerosene incandescent lamp
AT32814B
(en )
1908-05-11
Process for the production of metallic illuminants for electric light bulbs.
CH38080A
(en )
1907-08-31
Burning device for the production of gas incandescent bodies
CH48770A
(en )
1910-12-01
Process for the production of incandescent bodies from synthetic threads
CH41060A
(en )
1908-09-16
Metal filament light bulb
ES37802A1
(en )
1906-04-01
An incandescent body with its corresponding manufacturing process for incandescent lamps.
ES40458A1
(en )
1907-05-01
An improved process for the manufacture of filaments for electric incandescent lamps.
AT25226B
(en )
1906-08-10
Process for the production of gas incandescent light stumps.
FR376413A
(en )
1907-08-08
Filament for incandescent lamps
CH40110A
(en )
1908-06-01
Filament for incandescent lamps
CH42124A
(en )
1909-01-02
Automatic switch for gas lamps
CH39673A
(en )
1908-04-01
Indoor lighting lamp
CH39385A
(en )
1908-03-02
Gas incandescent invert lamp
ES36032A1
(en )
1905-06-16
A process for the manufacture of filaments for electric and incandescent lamps of all kinds.