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Battery backup system for appliances using wall transformers

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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Battery charger having a interchangeable plug device

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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Battery charger having attached base

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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Battery charger having fixed ends for winding and releasing...

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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Battery charger unit incorporated in a power cord reel housing

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Patent

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Battery charger with control of two power supply circuits

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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Battery charging unit incorporated in a power cord reel housing

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Patent

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Battery operated extension cord

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Reexamination Certificate

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