4. Tool driving or impacting
  5. With indicating or signaling means

Raymond L. Welch

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Drill rig apparatus

Tool driving or impacting – With indicating or signaling means
Patent

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Mast assembly

Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly – Tilts relative to base
Patent

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Motor control circuit for an eye level range

Stoves and furnaces – Stove hoods
Patent

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Profile ID: LFUS-PAI-P-1026776

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