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GB191111904A
|
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Improvements in the Manufacture of Incandescent Mantles.
|
|
US813730A
|
|
Storage battery.
|
|
GB190300273A
|
|
Improvements in or Pertaining to the Manufacture of Electrodes for Secondary Batteries.
|
|
GB190004680A
|
|
Improvements in Electric Accumulators.
|
|
GB189913308A
|
|
Improved Automatic Lighting Apparatus for Gas Jets.
|
|
US629201A
|
|
Means for preventing sparking when and breaking electric circuits.
|
|
GB189800331A
|
|
Improvements in Preventing Sparking when Making and Breaking Electric Circuits.
|
|
GB189715870A
|
|
Improvements in the Electrical Propulsion of Carriages and other Vehicles, Boats, and the like.
|
|
GB189712957A
|
|
Improvements in Transforming Alternating into Continuous Electric Currents or vice versa.
|
|
GB189712820A
|
|
Improvements in Transforming Continuous Electric Currents.
|
|
GB189512622A
|
|
Improvements in Secondary or Accumulator Cells.
|
|
GB189512468A
|
|
Improvements relating to the Current Supply of Electric Railways by an Auxiliary Accumulator Battery.
|
|
GB189512469A
|
|
Improvements relating to Electric Railway Vehicles.
|
|
CA212488A
|
|
Service box
|
