CH18567A
(en )
1900-01-31
Electric incandescent lamp with a filament made from second class conductors
CH18955A
(en )
1900-04-30
Electric lamp with filament made of ladders, second class
CH19192A
(en )
1900-05-31
Electric lamp with filament made of ladders, second class
CH19987A
(en )
1900-10-31
Electric lamp with filament made of ladders, second class
CH34544A
(en )
1906-05-15
Electric incandescent lamp with a filament made of tungsten metal
CH7062A
(en )
1894-01-31
Electric filament lamp with multiple filaments
CH24603A
(en )
1903-01-31
Incandescent lamp with incandescent body made from second class conductors
CH10400A
(en )
1895-12-15
Electric light bulb with replacement filaments
ES23423A1
(en )
1899-01-01
A new incandescent electric lamp.
CH15960A
(en )
1898-08-31
Improved Electric Light Bulb
CH13070A
(en )
1897-04-30
Luminaries for electric light bulbs
CH25565A
(en )
1903-05-31
Filament for electric light bulbs
ES31948A1
(en )
1903-07-16
A way of bonding filaments of electric incandescent lamps to current metallic wires.
CH16133A
(en )
1898-09-30
Electric light bulb
CH18081A
(en )
1899-10-31
Electric light bulb
ES22117A1
(en )
1898-02-16
Improvements in incandescent electric lamps.
GB189616435A
(en )
1897-06-26
Improvements in Filaments of Electric Incandescent Lamps.
CH18082A
(en )
1899-10-15
Electric vacuum light bulb
CH12587A
(en )
1897-01-31
Electric light bulb
GB189522337A
(en )
1895-12-28
Improvements in Incandescent Electrical Lamps.
CH17617A
(en )
1899-07-15
Incandescent bodies for electric light bulbs
CH10516A
(en )
1895-12-15
Electric arc lamp
CH15471A
(en )
1898-06-15
Electric light bulb with replaceable filaments
CH16327A
(en )
1898-10-31
Electric arc lamp
CH37527A
(en )
1907-06-15
Electric light bulb with a metallic filament