4. Electric heating
  5. Metal heating
  6. For bonding with pressure

David G. Copeman

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Equalizing cam rocker fixture assembly for a resistance welding

Electric heating – Metal heating – For bonding with pressure
Patent

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Form and punch apparatus

Metal deforming – With cutting – By shearing tool-couple
Patent

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Tube thread forming apparatus and method

Metal deforming – By three or more coacting relatively movable tools – Concurrently actuated tools
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1681426

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