DK46390C
(en )
1932-10-31
Device for Involving Power and Low Power Cables in the Ground.
ES113023A1
(en )
1929-09-01
Improvement in the amplifying devices.
ES115616A1
(en )
1929-12-01
Improvements in the insulators.
DK47658C
(en )
1933-08-21
Pole for electric accumulators and the like.
ES120429A1
(en )
1930-12-01
Improvements in gyroscopic devices.
ES113037A1
(en )
1929-10-16
Improvements in announcements or similar devices.
ES114208A1
(en )
1929-10-16
Improvements in the taps.
ES114965A1
(en )
1929-11-01
Improvements in electrical systems.
ES113402A1
(en )
1929-08-01
Improvements in anti-glare devices.
ES112893A3
(en )
1929-07-01
Improvements in electrical cables.
ES114084A1
(en )
1929-08-16
An electrical procedure, and its corresponding apparatus, to determine the terrain traversed in the boreholes.
ES115414A2
(en )
1930-01-01
Improvements in electrical distribution systems.
ES111010A1
(en )
1929-04-01
Improvements in concrete mixing devices.
ES114857A1
(en )
1930-01-01
IMPROVEMENTS IN DEPARTURE OR OUTPUT DEVICES.
ES115403A1
(en )
1930-02-16
Improvements in the speakers.
ES114822A1
(en )
1929-10-01
Improvements in radio-telegraphic transmitters and similar devices.
DK43378C
(en )
1930-11-17
Repair and Patch.
ES110792A1
(en )
1929-02-16
Improvements in turbines.
ES122532A1
(en )
1931-05-16
Improvements in the orientation devices.
ES111219A1
(en )
1929-04-01
Improvements in electric traction systems.
ES115975A3
(en )
1930-01-01
IMPROVEMENTS IN LIFTING DEVICES.
ES114296A1
(en )
1929-09-01
Improvements in the airplanes.
ES115594A1
(en )
1929-12-01
Improvements in force systems.
ES115603A1
(en )
1929-12-01
Improvements in force systems.
ES115294A1
(en )
1929-12-01
Improvements in the emboli.