CH41171A
(en )
1908-09-16
Water jet electrode for protection against overvoltages in electrical networks
CH39308A
(en )
1908-02-17
Protection device against harmful overvoltages in electrical systems
CH38530A
(en )
1907-11-15
Protection against momentary overvoltage
CH65242A
(en )
1914-06-01
Device for protecting the cords, in particular of plug switches
CH41824A
(en )
1908-12-01
Lightning protection device with movable electrodes for high-voltage lines
GB190616315A
(en )
1907-01-17
Improvements in Spark Arresters
CH42607A
(en )
1909-02-16
Device for watertight locking of electrical rotary switches
CH48768A
(en )
1910-12-01
Device against dangers resulting from overvoltages in electrical networks
AU614106B
(en )
1906-10-02
Improvements in spark arresters
CH43098A
(en )
1909-04-01
Overvoltage protection
CH57886A
(en )
1913-02-01
Auxiliary device for protection against unintentional activation of electrical safety devices
AU614106A
(en )
1906-10-02
Improvements in spark arresters
AT82885B
(en )
1921-02-25
Device for closing and interrupting the electrical current.
GB190615619A
(en )
1907-04-04
Improvements in Spark Arresters.
CH15005A
(en )
1898-03-15
Lightning protection device
CH40107A
(en )
1908-06-01
Safety device against overvoltage
CH41518A
(en )
1908-11-02
Safety device against overvoltage
CH45849A
(en )
1910-01-03
Device for amplifying the effect of a weak electric current
CH42109A
(en )
1909-01-02
Device to protect against overvoltage
GB190218323A
(en )
1903-06-25
Improvements in Lightning Arresters.
ES38368A3
(en )
1906-07-01
A provision for the spark path to protect against excess electrical voltages.
AU643506B
(en )
1906-12-01
Improvements in electrical appliances for protection against insects
CH39521A
(en )
1908-03-16
Protection device against overvoltage in DC systems
ES41676A1
(en )
1907-11-01
Improvements in telephone devices and panels for telephone communications and in the way of supplying electrical current to them.
CH55436A
(en )
1912-08-16
Electrical system protected against overvoltages