DK32384C
(en )
1923-10-15
Apparatus for Testing Wiring Connections in Electrical Installations.
CH157152A
(en )
1932-09-15
Device for switching strong electrical alternating currents.
DK40176C
(en )
1929-05-21
Device for Providing an Accessible Zero Point in Three-Phase Wiring.
DK51101C
(en )
1935-12-30
Apparatus for measuring the breakdown voltage between conductors in an electrical wiring system.
DK29149C
(en )
1922-01-09
Apparatus for Setting Up Lead Cable Boxes.
ES90291A1
(en )
1924-09-16
An electrical circuit tester device.
DK32614C
(en )
1923-12-17
Apparatus for Determining the Location of Fault Points in Cables and Insulated Electrical Wires.
DK44759C
(en )
1931-10-26
Apparatus for Determining the Maximum Current in an Electrical System.
DK28786C
(en )
1921-11-14
Method and Apparatus for Testing Insulated Wires.
CH145592A
(en )
1931-02-28
Step switching device for electrical systems.
ES89877A1
(en )
1924-10-01
Insulation means testing apparatus.
DK34698C
(en )
1925-07-06
Apparatus for Converting Pressure Variations to Electrical Variations.
DK34648C
(en )
1925-06-22
Apparatus for Tearing Boards.
DK33286C
(en )
1924-05-26
Apparatus for exerting an immediate electrical effect on the skin nerves.
DK33224C
(en )
1924-05-19
Apparatus for sound generation.
DK35408C
(en )
1925-12-28
Apparatus for Screwing in Rubber Plugs in Butyrometers.
ES88135A3
(en )
1924-04-01
An astatic comparator device for electric currents.
DK39756C
(en )
1929-01-28
Waterproof device for electrical wiring in bushing openings for such.
DK34157C
(en )
1925-02-16
Device in Installations for Connection or Termination of Lead Cables.
DK35896C
(en )
1926-04-19
Apparatus for Softening Water.
ES120376A1
(en )
1930-12-01
An apparatus for the incombustibilización of electrical conductors.
DK35384C
(en )
1925-12-14
Electrical Advertising Apparatus.
CA286837A
(en )
1929-01-29
Electrical device testing apparatus
DK35788C
(en )
1926-03-22
Device for automatic Regulation of an Electrical System Power.
DK35020C
(en )
1925-09-14
Method and Apparatus for Generating Positive Ion Currents.