CH120622A
(en )
1927-06-01
Drive device for operating electrical switches.
AT108026B
(en )
1927-11-25
Device for automatic switching on and off of electric lamps.
AT105627B
(en )
1927-02-25
Device for converting single-phase current into direct current.
CH108368A
(en )
1925-01-02
Protection device for current limitation and automatic shutdown of electrical power consumers.
ES100227A1
(en )
1927-01-16
Improvements in electric incandescent lamps.
AU509426A
(en )
1927-01-17
Improvements in electrical signalling and/or controlling systems
ES98491A1
(en )
1926-09-01
Improvements in electric incandescent lamps for public or private lighting.
CA267091A
(en )
1926-12-28
Electrical resistance device
FR624930A
(en )
1927-07-29
Metal light bar with cover, enclosing the lamp sockets and electrical conductors
AU1073827A
(en )
1928-12-18
Improvements in electric dimmer switches
CH196124A
(en )
1938-02-28
Device for limiting the tilting of flat slide rockers on pantographs of electric vehicles.
CA262259A
(en )
1926-06-29
Automobile switch and lighting system
GB302754A
(en )
1928-12-27
Improvements in electric switches, fuses and the like
FR638152A
(en )
1928-05-18
Electromagnetic switch, intended in particular for vehicle lighting installations
CA274025A
(en )
1927-09-20
Electric incandescent device
GB508390A
(en )
1939-06-30
Improvements in or relating to electric switches, switch-fuses, switch-sockets and the like, for use in alternating current circuits
AU292326A
(en )
1927-08-02
Improvements in quick action electric switches
AU364026A
(en )
1926-09-04
Improvements in electrical furnaces
AU369226A
(en )
1927-09-20
Improvements in electric switches
DK48194C
(en )
1933-12-27
Device for pantograph current collection devices for electric railways and the like.
GB304386A
(en )
1929-01-24
Improvements in high-tension electric circuit-controlling devices
CA266684A
(en )
1926-12-14
Quick action electric switch
CA262298A
(en )
1926-07-06
Electrical switch
CA266881A
(en )
1926-12-21
Electrical switch
CA265414A
(en )
1926-11-02
Electric switch