4. Electric heating
  5. Metal heating
  6. By arc

Ralph M. Samodell

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Automatic presettable welding system

Electric heating – Metal heating – By arc
Patent

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Electric ARC welder with background current

Electric heating – Metal heating – By arc
Reexamination Certificate

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Power reconnect and voltage control

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate

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Power switch for welder

Electricity: circuit makers and breakers – Interlocking – Between plural switches
Reexamination Certificate

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Protection device for dual stage power supply

Electric heating – Metal heating – By arc
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1295372

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