DK35574C
(en )
1926-02-01
Device for Series connection of the Small Batteries in Radio High Voltage Batteries.
FR604799A
(en )
1926-05-12
Special thermoelectric battery
ES95376A1
(en )
1926-01-01
Improvements in electrical discharge devices.
DK39925C
(en )
1929-03-18
Device for Providing Symmetry in Radiogoniometers.
DK38287C
(en )
1927-12-27
Electrical Element, especially for Use in Batteries for Radio Use.
DK36491C
(en )
1926-09-06
Adjustable Capacitor for Use in Connection with Radio Devices.
ES92381A1
(en )
1925-05-16
Improvements in electrical regulation systems.
FI10964A
(en )
1925-12-11
Anode batteries
ES96111A1
(en )
1926-07-01
Improvements in electrical converters.
ES93541A1
(en )
1925-10-01
Improvements in electrical converters.
DK34023C
(en )
1925-01-05
Device for Fastening the Separators in Electric Accumulators.
ES93356A1
(en )
1925-06-16
Improvements in current rectifier devices.
ES92148A1
(en )
1925-04-16
Improvements in electric accumulators.
ES93084A3
(en )
1925-07-16
Improvements in unidirectional devices that carry electric current.
ES94501A1
(en )
1925-11-01
Improvements in the trusses.
ES82231A1
(en )
1923-01-01
Improvements in announcing devices.
DK39648C
(en )
1928-12-27
Device for Connecting Low Power Devices to High Power Cables.
ES87543A3
(en )
1924-01-01
Improvements in electrical discharge devices.
ES87547A3
(en )
1924-01-01
Improvements in electrical discharge devices.
ES87733A1
(en )
1924-02-16
Improvements in electrical discharge devices.
ES80806A1
(en )
1922-05-16
Improvements in the electrodes for electrolytic batteries.
ES95853A1
(en )
1926-02-16
Improvements in anti-oscillation devices.
ES91819A1
(en )
1925-03-16
Improvements in electrical regulating devices.
DK38728C
(en )
1928-04-30
Collector for Film.
DK43815C
(en )
1931-03-09
High frequency electrode.