CH21339A
(en )
1901-06-30
Display and lighting device on automatic safety devices for electrical lines
CH21586A
(en )
1901-08-15
Safety device for electrical air lines
CH20950A
(en )
1901-04-30
Electric alarm device on clocks
CH29883A
(en )
1904-10-15
Connection device for electrical cables
CH23880A
(en )
1902-09-30
Plug contact for hands-free electrical lighting apparatus
CH21822A
(en )
1901-09-30
Electric alarm device
CH23326A
(en )
1902-06-30
Automatic protection device for electric trams
CH18016A
(en )
1899-09-15
Electrical signaling device
ES25433A1
(en )
1900-03-01
An electrical warning device.
CH21755A
(en )
1901-09-30
Electric train cover device on railway systems
CH24489A
(en )
1902-12-31
Lightning protection device for electrical lines
CH25824A
(en )
1903-06-30
Electrical contact device for fire alarm systems
CH21174A
(en )
1901-05-31
Automatic protective device on trams
CA72163A
(en )
1901-07-09
Electrical measuring device
CH31251A
(en )
1905-03-15
Elevator device for electric light bulbs
CH22377A
(en )
1902-01-31
Electrical fuse
CH23679A
(en )
1902-09-15
Device for automatic control of the lighting voltage in electrical lighting systems with fluctuating operating voltage
GB190021338A
(en )
1901-10-12
An Improved Illuminated Advertising Device for Attachment to Incandescent Electric Lamps and the like
CH27222A
(en )
1903-12-15
Electrical line
CH22028A
(en )
1901-11-30
Starting device for electrically operated elevators
FR337567A
(en )
1904-04-15
Device for electric illuminated signs
CH24613A
(en )
1903-01-31
Advertising device
CH26339A
(en )
1903-08-31
Electrical contact device for railway vehicles
CH73855A
(en )
1916-12-01
Contact device for electrical apparatus
CH24945A
(en )
1903-03-31
Switch-regulator device for electric drive systems with brake circuit