CH312401A
(en )
1955-12-31
Method for creating favorable switch-off conditions for an electrical switch
CH208091A
(en )
1939-12-31
Device for the secrecy of broadcasts in electrical telecommunications.
CH227178A
(en )
1943-05-31
Device for multiplying factors which correspond to electrical voltages and other quantities.
CH295844A
(en )
1954-01-15
Device for performing artificial respiration using electrical stimulation current.
CH97437A
(en )
1923-01-16
Device on skis to prevent backward sliding.
CH203272A
(en )
1939-02-28
Electric discharge tube for emitting images to be transmitted electrically; and method of manufacturing this tube.
CH94447A
(en )
1922-08-01
Device for air combustion in an electric flame arc.
CH82455A
(en )
1919-10-01
Electrical device for processing statistical information
CH77304A
(en )
1918-04-01
Device on electric smelting furnaces to automatically maintain a constant electric current
AT108631B
(en )
1928-01-25
Device for interrupting an electrical current.
CH87806A
(en )
1921-01-03
Device for securing nuts and screw heads.
CH208627A
(en )
1940-02-15
High voltage electrical apparatus.
CH196124A
(en )
1938-02-28
Device for limiting the tilting of flat slide rockers on pantographs of electric vehicles.
FR535663A
(en )
1922-04-19
Advanced system for electrical power distribution
CH82151A
(en )
1919-09-01
Device for operating an electrical rotary switch remotely
AT96081B
(en )
1924-02-25
Transformation device for generating high voltages in electrical medical systems.
ES71022A1
(en )
1919-11-16
Improvements in electric lamps.
CH82693A
(en )
1919-10-16
Device to prevent flashovers on electrical machines
CH85945A
(en )
1920-07-16
Device for operating an electrical rotary switch remotely.
DK24401C
(en )
1919-04-14
Electric Screw Plug.
AT91054B
(en )
1923-01-25
Device for the electrical remote transmission of movements.
FR526473A
(en )
1921-10-08
Improvement in electrical outlets
ES78451A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
ES78452A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
CH80662A
(en )
1919-03-17
Electric device for heating, in particular tools