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GB191314498A
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An Improved Method of and Means for Detecting Dangerous Atmospheres in Mines and for Operating an Alarm therein.
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GB191321542A
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Improved Apparatus for Estimating the Percentage of Carbon-dioxide in Flue Gases.
|
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CA128529A
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Electric battery
|
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GB190910791A
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Improved Electrolyte for Primary or Secondary Galvanic Batteries, applicable also as an Electrolytical Resistance for Electric Currents of any Order.
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GB190824355A
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Improvement in Depolarisers for Electric Batteries.
|
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GB190814609A
|
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Improvements in Electric Galvanic Batteries.
|
|
GB190824356A
|
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New or Improved Depolariser for Electric Batteries.
|
|
US902173A
|
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Electric cell.
|
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GB190519616A
|
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Improvements in Electric Batteries.
|
|
US743337A
|
|
Battery.
|
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GB190223389A
|
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An Improved Galvanic Dry Cell.
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