CH135864A
(en )
1929-10-15
Electrical contact device.
FR33231E
(en )
1928-08-20
Improvements in control systems for circuits and electrical machines
AT91082B
(en )
1923-01-25
Device for voltage regulation in AC systems.
AT108046B
(en )
1927-11-25
Device for voltage regulation of transformers, in particular for AC motors.
ES87591A1
(en )
1924-01-16
Improvements in devices for electrically welding.
ES87592A1
(en )
1924-01-16
Improvements in devices for electrically welding.
DK33455C
(en )
1924-07-21
Branch for Electrical Installations.
FR33322E
(en )
1928-09-26
Improvements in control systems for circuits and electrical machines
AT109109B
(en )
1928-03-26
Three-phase current control set.
ES85482A1
(en )
1923-07-01
Improvements in resistance regulating devices.
DK41794C
(en )
1930-03-10
High voltage line.
ES94383A1
(en )
1925-12-16
Improvements in electrical regulation or control systems.
ES85118A3
(en )
1923-06-16
Improvements in electrical regulation mechanisms for pneumatically operated devices.
ES92254A1
(en )
1925-04-16
Perfected electric generator.
ES87449A1
(en )
1924-01-01
Improvements in electrical distribution systems.
AT96096B
(en )
1924-02-25
Device for the electrical heating of rotatable iron hollow rollers.
DK35070C
(en )
1925-09-28
Device for regulating the mean load of electrical systems and for measuring the energy.
CH136760A
(en )
1929-11-30
Device for regulating the voltage of electrical transformers.
DK36947C
(en )
1926-12-27
Rectifier, especially for high voltage DC.
ES87658A1
(en )
1924-02-01
Improvements in electrolytic devices.
DK35574C
(en )
1926-02-01
Device for Series connection of the Small Batteries in Radio High Voltage Batteries.
ES114666A1
(en )
1929-10-01
Electrode for diathermy and in particular electrocautery.
ES84652A1
(en )
1923-06-01
Improvements in electro-therapeutic devices.
CH104500A
(en )
1924-04-16
Electric heating device.
DK36294C
(en )
1926-07-26
Low current contact.