4. Railway switches and signals
  5. Electric automatic highway signals, mine doors, and gates
  6. Car-actuated controller

Roy Spence

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Fish scaling system

Butchering – Epidermal outgrowth remover – Power driven
Reexamination Certificate

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Railway gate system

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Car-actuated controller
Patent

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Tire changing system with frame mounted jacks and lug wrench

Land vehicles – Wheeled – Attachment
Patent

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Profile ID: LFUS-PAI-P-800581

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