|
DE849864C
|
|
High-performance filling element
|
|
CA156700A
|
|
Electricity meter
|
|
CA109123A
|
|
Peroxide of lead zinc accumulator
|
|
CA109124A
|
|
Lead zinc accumulator
|
|
GB190714762A
|
|
Improvements relating to Secondary Batteries.
|
|
GB190714756A
|
|
Improvements relating to Secondary Batteries.
|
|
GB190620327A
|
|
An Improved Method of Operation with Lead-peroxide-zinc Storage Batteries.
|
|
GB190620328A
|
|
Improvements in the Process of Charging Lead-peroxide-zinc Storage Batteries.
|
|
GB190421913A
|
|
Improvements in the Manufacture of Galvanic Cells.
|
|
GB190419266A
|
|
A New or Improved Galvanic Cell.
|
|
GB190310698A
|
|
Improvements relating to the Phase Synchronisation in Electromotors with Alternating Field.
|
|
GB190310697A
|
|
A New or Improved Watt-hour Meter.
|
|
GB190308497A
|
|
Improvements in and relating to Electric Dynamos and Motors with Alternating Field.
|
|
GB190306102A
|
|
A New or Improved Electricity Meter
|
|
GB190204805A
|
|
Improvements in Electrodynamometers.
|
|
GB190118346A
|
|
Improvements in Recording Apparatus for Electrical Currents
|
|
GB190105411A
|
|
Improvements in Electric Measuring Apparatus.
|
|
US912351A
|
|
Process of charging lead-peroxid-zinc storage batteries.
|
