CH20306A
(en )
1901-01-15
Multiple electric incandescent lamp made up of second-class conductors and a single radiator
CH21067A
(en )
1901-05-15
Lamp with incandescent body made of conductors, second class
CH18955A
(en )
1900-04-30
Electric lamp with filament made of ladders, second class
CH19987A
(en )
1900-10-31
Electric lamp with filament made of ladders, second class
CH20210A
(en )
1900-12-15
Advanced Incandescent Electric Lamp
CH20392A
(en )
1901-01-31
Lamp with several incandescent bodies made of second-class conductors, only one of which ever comes on and lights up
CH18567A
(en )
1900-01-31
Electric incandescent lamp with a filament made from second class conductors
GB189913849A
(en )
1900-01-20
Improvements in Electric Incandescent Lamps.
CH13832A
(en )
1897-08-31
Incandescent electric lamp
CH21736A
(en )
1901-09-30
Ignition device in electrical lighting systems with incandescent bodies made from second-class conductors
CH24603A
(en )
1903-01-31
Incandescent lamp with incandescent body made from second class conductors
CH17851A
(en )
1899-09-15
Two-filament electric incandescent lamp
CH16400A
(en )
1898-11-15
New incandescent electric lamp
CH20127A
(en )
1900-11-30
Incandescent electric lamp, improved
FR379305A
(en )
1907-11-05
Filament arrangement in high voltage and low power incandescent electric lamps
CH17294A
(en )
1899-05-31
Advanced Incandescent Electric Lamp
CH10555A
(en )
1895-12-31
New incandescent electric lamp
CA67516A
(en )
1900-05-29
Incandescent electric lamp
CA67658A
(en )
1900-06-07
Incandescent electric lamp
CH15178A
(en )
1898-03-31
Advanced base for incandescent lamp
ES23624A1
(en )
1899-02-01
An electric lamp with luminous bodies composed of second-class conductors.
ES23976A1
(en )
1899-04-16
An electric lamp with luminous bodies composed of second-class conductors.
ES24950A1
(en )
1899-11-16
An electrical resistance to adjust the current conduction in electric lamps with luminous bodies made up of second-class conductors.
CH21072A
(en )
1901-05-15
Incandescent lamp socket with live sleeve and internal current connector
GB189701887A
(en )
1897-10-23
Improvements in or connected with Incandescent Electric Lamps.