CH46903A
(en )
1910-05-02
Electric metal filament light bulb with elastic support for the filament
CH40695A
(en )
1908-08-17
Electric light bulb with supported metal filaments
CH37294A
(en )
1907-05-31
Electric light bulb with metal filaments
CH40112A
(en )
1908-06-01
Electric light bulb with several metal filament brackets
CH48925A
(en )
1910-12-16
Electric light bulb with supported metal threads
CH47482A
(en )
1910-07-01
Metal filament light bulb
CH54431A
(en )
1912-05-17
Incandescent lamp with metal filaments
CH66823A
(en )
1914-10-16
Electric light bulb with filament support frame
CH52979A
(en )
1912-01-16
Metal filament light bulb
FI3620A
(en )
1909-03-04
Electric light bulbs with a metal splitter
CH37527A
(en )
1907-06-15
Electric light bulb with a metallic filament
ES48993A1
(en )
1910-12-01
Improvements in metallic filament incandescent electric lamps.
CH48634A
(en )
1910-11-16
Electric arc lamp
CH48771A
(en )
1910-12-01
Electric arc lamp
CH67033A
(en )
1914-11-02
Electric light bulb
ES56520A1
(en )
1913-11-16
Metallic filament electric lamp.
DK12666C
(en )
1909-11-01
Electric Lighting Fixture.
CH47604A
(en )
1910-07-16
Metal filament lamp
ES46983A3
(en )
1910-02-16
An electric lighting fixture with an interior reflector.
DK11739C
(en )
1909-01-25
Electric Arc lamp with upward facing arc.
CH48831A
(en )
1910-12-01
Electric lighting device on looms
AT74068B
(en )
1917-12-27
Electric light bulb with gas filling.
ES41014A1
(en )
1907-07-16
Improvements in the supports of the metallic filaments for the incandescent electric lamps.
CH40932A
(en )
1908-09-01
Electric light bulb with U-shaped bent, supported metal threads
CH37526A
(en )
1907-06-15
Electric light bulb