CH82519A
(en )
1920-02-02
Device to prevent harmful leakage currents in earthed high-voltage networks
FR552409A
(en )
1923-05-01
Improvements to electrical transformers
CH78158A
(en )
1918-06-17
insulator
ES75273A1
(en )
1920-12-16
An improved arrangement to regulate the passage or movement of the electrodes in electrical discharge devices.
CH79673A
(en )
1919-05-01
Electrical measuring device
FR557826A
(en )
1923-08-16
Improvements to surge arresters for electrical circuits
FR530809A
(en )
1921-12-31
Improvements to electrical insulators
DK27186C
(en )
1921-02-21
High voltage insulator.
ES68807A1
(en )
1919-04-01
High voltage electrical insulator.
DK28141C
(en )
1921-08-01
Device for high voltage insulators.
DK27396C
(en )
1921-04-04
Device for bonding high-voltage power lines to insulators.
FR503366A
(en )
1920-06-09
Improvements to electrical insulators
FR556205A
(en )
1923-07-13
Third rail insulator
FR562497A
(en )
1923-11-12
Improvements to electrical insulators
CH81047A
(en )
1919-05-01
Switching device
FR552383A
(en )
1923-04-30
Electrical insulators
FR526358A
(en )
1921-10-07
Improvements to electrical devices (output tanks and insulators)
ES71610A1
(en )
1920-02-16
High voltage circuit breaker with protection.
ES67953A1
(en )
1918-11-01
Improvements in electrical transformers.
ES79751A1
(en )
1922-02-01
Protection provision for high voltage insulators of precipitation electrical installations.
FR24688E
(en )
1922-09-28
Improvements made to electrical connection devices
CH77695A
(en )
1918-05-16
Post insulator for electrical high-voltage lines
CH80600A
(en )
1919-08-01
Post insulator for electrical high-voltage lines
CH82336A
(en )
1919-09-16
High voltage resistance
ES72411A1
(en )
1920-04-09
Improvements in electrical vacuum devices.