AT108046B
(en )
1927-11-25
Device for voltage regulation of transformers, in particular for AC motors.
CH141141A
(en )
1930-07-15
Arrangement for voltage regulation of AC power lines.
AT116555B
(en )
1930-02-25
Step switch for voltage regulation of multi-phase transformers.
AT121376B
(en )
1931-02-25
Regulating switch for step transformers.
DK46914C
(en )
1933-02-13
High voltage transformer, in particular Voltage measuring transformer.
AT91082B
(en )
1923-01-25
Device for voltage regulation in AC systems.
AT105627B
(en )
1927-02-25
Device for converting single-phase current into direct current.
CH136760A
(en )
1929-11-30
Device for regulating the voltage of electrical transformers.
ES96173A1
(en )
1926-03-16
An electrical regulator switch for transformers.
FR31231E
(en )
1927-01-26
Electric current rectifier
ES105877A1
(en )
1928-02-16
Special radiator-cooler for electrical appliances, such as transformers and others.
CH138417A
(en )
1930-02-28
Device for regulating AC power lines.
FR596299A
(en )
1925-10-20
AC transformer rectifier
AT104331B
(en )
1926-10-11
AC rectifier.
ES91967A1
(en )
1925-05-16
Overhead electrical limiter V. and G. for direct and alternating currents.
FR614599A
(en )
1926-12-17
AC rectifier
DK38609C
(en )
1928-03-26
AC magnet.
ES91471A1
(en )
1925-02-01
Current transformer for high voltage.
ES101103A1
(en )
1927-03-01
Improvements in electrical transformers.
DK37422C
(en )
1927-05-02
AC inverter.
FR605180A
(en )
1926-05-20
Two-phase to single-phase static current transformer
ES86102A1
(en )
1923-12-01
Electric pasteurizer for liquids.
ES87411A2
(en )
1923-12-16
Electric pasteurizer for liquids.
DK35511C
(en )
1926-01-18
Procedure and Device for Voltage Regulation in Rotary Current Systems.
DK39681C
(en )
1929-01-02
Electric Rectifier.