|
GB102196A
|
|
Improvements in Sound Recording Devices.
|
|
GB191411928A
|
|
Improvements in Generating Electro-magnetic Oscillations or High Frequency Currents.
|
|
GB191408280A
|
|
Improvements in or relating to Electric Distribution Systems.
|
|
US1240294A
|
|
System for generating high-frequency currents.
|
|
GB191009580A
|
|
Improvements in and relating to Alternating Current Power Measurement and Instruments for the same.
|
|
US894931A
|
|
Trolley-car for electric motor-vehicles.
|
|
GB190611839A
|
|
Improvements in or relating to Trolleys for Electric Motor Cars.
|
|
GB190601221A
|
|
Improvements in and relating to the Indication, Measuring and Recording of Electric Currents.
|
|
US855220A
|
|
Electric meter.
|
|
US820756A
|
|
Alternating-current meter.
|
|
US820755A
|
|
Energy-meter for three-phase plants unsymmetrically loaded.
|
|
GB190005585A
|
|
Improvements relating to the Measurement of Electric Power and Energy in Three-phase Alternating Current Systems.
|
|
US746775A
|
|
Producing appropriate phase relationship in alternating-current measuring or other devices.
|
|
US713586A
|
|
Filament for incandescent electric lamps known as nernst lamps.
|
|
GB190002219A
|
|
Improvements relating to the Measurement of Electric Power and Energy.
|
|
CA66364A
|
|
Electric motor
|
|
US631919A
|
|
Electric motor.
|
|
US685242A
|
|
Electric railway.
|
|
CA212004A
|
|
Radio telegraphic sending station
|
