4. Electricity: battery or capacitor charging or discharging
  5. Serially connected batteries or cells
  6. With discharge of cells or batteries

John C. West

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Light blocking lens for welder helmet

Apparel – Guard or protector – For wearer's head
Patent

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Means indicating a condition of charge in a battery charger

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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Mig welder cutting head attachment

Electric heating – Metal heating – Cutting or disintegrating
Patent

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Portable welding unit

Electric heating – Metal heating – By arc
Reexamination Certificate

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Rotary seismic shear-wave source

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Profile ID: LFUS-PAI-P-715220

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