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US688077A
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Porous diaphragm for batteries.
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US670877A
|
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Primary battery and process of regenerating same.
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US676281A
|
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Electrode for primary batteries.
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US673249A
|
|
Base for battery-cells.
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US669007A
|
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Process of manufacturing zinc-amalgam plates.
|
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US678816A
|
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Process of recovering zinc.
|
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US649841A
|
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Process of operating two-liquid primary batteries and regenerating elements thereof.
|
|
US649840A
|
|
Process of operating primary batteries and regenerating elements thereof.
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|
US665784A
|
|
Apparatus for regenerating spent elements of primary batteries.
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|
US665783A
|
|
Process of regenerating spent elements of primary batteries.
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|
US665782A
|
|
Primary battery.
|
|
US651247A
|
|
Chemical electric generator.
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