CH507A
(en )
1889-04-02
Innovations in electrical lighting systems
ES9698A1
(en )
1889-08-01
Improvements in alternative electrical machinery.
CH74A
(en )
1889-01-09
Innovations to hoists
ES10251A1
(en )
1890-01-01
Improvements in electrical switches.
CH382A
(en )
1889-03-20
Innovations in dynamo machines
ES9197A1
(en )
1889-04-01
Improvements introduced in electrical systems.
ES10348A1
(en )
1890-02-16
Improvements introduced in the underground installations of conductors for electric lighting.
CH150A
(en )
1889-01-25
Improvement in electricity meters
CH1125A
(en )
1889-09-19
Innovations in synochronous AC motors
ES9993A1
(en )
1889-11-01
An electric transformer-meter.
CH60A
(en )
1889-01-08
Innovations in mobile guns
ES9702A1
(en )
1889-08-01
An electric accumulator.
ES10329A1
(en )
1890-02-16
Improvements in the construction of pipes for electrical conductors.
ES10395A1
(en )
1890-03-01
Improvements in the construction and manufacture of electrical conductors.
CH614A
(en )
1889-06-06
Innovations in lighting with electric incandescent light
CH1511A
(en )
1890-01-15
Electrical contact plant
ES10159A1
(en )
1889-12-16
Improvements in the procedure to measure alternative electric currents.
ES10394A1
(en )
1890-03-16
Improvements in electric generators.
CH1532A
(en )
1890-01-31
Innovation in secondary electrical machines
ES10130A1
(en )
1889-12-16
An inexpensive electric lighting system.
CH293A
(en )
1889-03-04
New to the plug-in studs
CH1366A
(en )
1890-02-28
Electricity meter
ES9150A1
(en )
1889-03-01
Improvements introduced in electric incandescent lamps connected in series by series.
ES9151A1
(en )
1889-03-01
A modification in electric incandescent lamps.
CH191A
(en )
1889-01-29
Electric regulator