CH123215A
(en )
1927-11-16
Device for operating an electrical switch.
AT105749B
(en )
1927-02-25
Device for determining the location of a fault in electrical power networks.
DK40031C
(en )
1929-04-15
Device for Combustion Power Machines.
AT108631B
(en )
1928-01-25
Device for interrupting an electrical current.
FR574625A
(en )
1924-07-16
Device for connecting electric lines that can be used as a mains cutter
DK35318C
(en )
1925-11-30
Device for Protection against Insulation Faults in Electrical Installations.
ES87530A1
(en )
1924-01-01
Protection device for electrical installations.
ES91784A2
(en )
1925-06-01
Protection device for electrical installations.
AT91427B
(en )
1923-02-26
Method and device for electrical welding.
CH168547A
(en )
1934-04-15
Device for protecting electrical installations against insulation faults.
AU1364223A
(en )
1923-08-23
Improvements in measuring andsampling means for use in milking machine installations
AT116550B
(en )
1930-02-25
Device for the electrical individual drive of multi-part machines, in particular paper machines
ES89344A1
(en )
1924-07-16
Improvements in plug pins for electrical installations.
AT99339B
(en )
1925-02-25
Device for stereoscopy.
DK38159C
(en )
1927-11-21
Electric Welding Apparatus.
DK35772C
(en )
1926-03-15
Flushing device for double-acting two-roof combustion power machines.
AT109129B
(en )
1928-03-26
Device for rolling in pipes.
CA245259A
(en )
1924-12-16
Electric testing device
ES97049A2
(en )
1926-07-16
An electrical contact device.
AT109581B
(en )
1928-05-10
Arrangement for sending or receiving electrical waves.
CH167605A
(en )
1934-02-28
Device for adjusting part of breakers for ignition devices.
ES78452A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
ES78451A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
ES91357A1
(en )
1924-12-01
Improvements in electrical connections for telephone helmets.
AT105678B
(en )
1927-02-25
Method for electric seam welding.