4. Electricity: battery or capacitor charging or discharging
  5. Wind, solar, thermal, or fuel-cell source
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Device for charging a battery using a photovoltaic cell, and tim

Electricity: battery or capacitor charging or discharging – Wind – solar – thermal – or fuel-cell source
Patent

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Direct methanol fuel cell pack heating system

Electricity: battery or capacitor charging or discharging – Wind – solar – thermal – or fuel-cell source
Reexamination Certificate

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Dual-use generator and shock absorber assistant system

Electricity: battery or capacitor charging or discharging – Wind – solar – thermal – or fuel-cell source
Reexamination Certificate

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