CH7062A
(en )
1894-01-31
Electric filament lamp with multiple filaments
CH6250A
(en )
1893-07-31
Electric light bulb with replacement filaments
CH6362A
(en )
1893-08-15
Electric light bulb with replacement filaments
CH7063A
(en )
1894-01-31
Lighting system with incandescent lamps with multiple filaments
US500053A
(en )
1893-06-20
Incandescent electric lamp
CH10400A
(en )
1895-12-15
Electric light bulb with replacement filaments
CH7241A
(en )
1894-02-15
Suspension device for electric light bulbs
ES17556A1
(en )
1895-08-16
An electric incandescent lamp with spare filaments.
ES14684A1
(en )
1893-08-16
Improvements in incandescent electric lamps.
CH34544A
(en )
1906-05-15
Electric incandescent lamp with a filament made of tungsten metal
CH7166A
(en )
1894-01-31
Electric arc lamp
ES14074A1
(en )
1893-02-01
An incandescent electric lamp with replacement incandescent wires.
CH37527A
(en )
1907-06-15
Electric light bulb with a metallic filament
CH35030A
(en )
1906-06-30
Electric filament for arc light with incandescent mantle
CH30394A
(en )
1904-12-15
Incandescent lamp with metal filaments
CH18567A
(en )
1900-01-31
Electric incandescent lamp with a filament made from second class conductors
CH37294A
(en )
1907-05-31
Electric light bulb with metal filaments
CH6998A
(en )
1893-12-15
Advanced Incandescent Electric Lamp
CH6999A
(en )
1893-12-15
Advanced Incandescent Electric Lamp
FR420492A
(en )
1911-01-31
Incandescent electric lamp filament holders
FR405888A
(en )
1910-01-15
Electric filament lamps
GB189321430A
(en )
1894-01-20
Improvements relating to Incandescent Electric Lamps.
CH13070A
(en )
1897-04-30
Luminaries for electric light bulbs
CH9020A
(en )
1895-03-15
Multiple filament incandescent lamp system
CH40695A
(en )
1908-08-17
Electric light bulb with supported metal filaments