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Maintenance-free high capacity lead battery or accumulator

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent

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Means of providing pressure relief to sealed galvanic cell

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent

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Metal-supported seals for galvanic cells

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent

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Method of forming protective coating on cell safety valve...

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Reexamination Certificate

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Method of manufacturing a safety vented container and product

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent

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Method of manufacturing battery explosion prevention safety...

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Reexamination Certificate

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