CH1884A
(en )
1890-05-31
Innovation in electrical transformers
CH1979A
(en )
1890-08-30
Innovation in transformers
CH3182A
(en )
1891-07-15
Fuse in electrical power lines
CH4128A
(en )
1892-03-15
Innovation in electrical capacitors
ES10881A1
(en )
1890-08-01
Improvements in electric accumulators.
ES10628A1
(en )
1890-05-16
Improvements in electric batteries.
ES11288A1
(en )
1890-12-16
Improvements in electric batteries.
CH1931A
(en )
1890-10-31
Electric secondary clockwork
CH2991A
(en )
1891-05-15
Innovation in AC power machines
CH1532A
(en )
1890-01-31
Innovation in secondary electrical machines
ES11586A1
(en )
1891-02-01
Improvements introduced in electric batteries.
CH1154A
(en )
1890-02-14
Electric secondary clockwork
DE55527C
(en )
1891-02-27
Fuse for electrical screw contacts.
ES10830A1
(en )
1890-08-01
Improvements in fluids for primary electric batteries.
ES10394A1
(en )
1890-03-16
Improvements in electric generators.
ES10251A1
(en )
1890-01-01
Improvements in electrical switches.
CH2714A
(en )
1891-02-28
Electric railway
CH5149A
(en )
1892-11-30
Innovation in electric light bulbs
ES12221A1
(en )
1891-07-16
Improvements in electrical conductors.
CH5903A
(en )
1893-04-29
Innovation in transformers
ES10159A1
(en )
1889-12-16
Improvements in the procedure to measure alternative electric currents.
CH1511A
(en )
1890-01-15
Electrical contact plant
CH1966A
(en )
1890-06-30
Pole terminal
ES10965A1
(en )
1890-08-16
Improvements in electrical signals for railways.
CH2194A
(en )
1890-08-30
Circuit breaker for faradic currents