DK36681C
(en )
1926-10-18
Device for Feeding Electron Tubes from Electrical Power Cords.
AT134016B
(en )
1933-07-10
Electric discharge tube.
DK45530C
(en )
1932-04-18
Coupling device for Electron tubes that are fed with Power from electrical Power mains.
DK47178C
(en )
1933-04-03
Electron tube device.
AT121411B
(en )
1931-02-25
Electric discharge tube.
DK35197C
(en )
1925-10-26
Electron discharge device.
ES91599A1
(en )
1925-02-16
Automatic device for interrupting the electrical current for a limited time.
DK41082C
(en )
1929-11-11
Tube for Recording Electrical Cables.
DK41477C
(en )
1930-01-20
Ventilation device for electrical Elements.
DK40152C
(en )
1929-05-13
Device for Transferring Electrical Energy from a Generating Circuit to a Consuming Circuit.
ES91341A1
(en )
1924-12-01
Electron discharge apparatus.
DK36689C
(en )
1926-10-18
High voltage cable for small currents.
ES124516A1
(en )
1931-12-01
An electric discharge device.
CA239280A
(en )
1924-04-08
Aerial thermionic tube generator mechanism
DK45349C
(en )
1932-03-07
Rubber tubes for laying electrical wires.
ES124517A1
(en )
1931-12-01
An electric discharge lighting device.
ES91784A2
(en )
1925-06-01
Protection device for electrical installations.
DK39887C
(en )
1929-03-11
Device for Dimming Electric Projectors.
ES91847A3
(en )
1925-03-16
An extinguishing device for electric generators.
GR544B
(en )
1924-01-02
PHOTOVES TUBES FOR MULTIFUNCTION CURRENTS.
ES125207A1
(en )
1932-02-01
An electric lighting device.
DK38159C
(en )
1927-11-21
Electric Welding Apparatus.
DK35384C
(en )
1925-12-14
Electrical Advertising Apparatus.
ES89999A1
(en )
1925-04-01
Insulator improvements.
DK39255C
(en )
1928-09-17
Device for Reducing the Radio Interference from Electrical Machines.