4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Richard C. Darr

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Conveyor line parts hanger

Material or article handling equipment – Conveying – lifting – or transferring article – Belt or roller conveyor
Patent

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Cushion for vehicle safety belts

Land vehicles – Wheeled – Attachment
Patent

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Deck of playing cards

Games – toys – and sports goods – Toy – Representation or scale model
Patent

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Inspecting for matching of paired sheets of transparent material

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Lamp base

Lighting – Light fixture – Freestanding fixture or standard
Patent

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Profile ID: LFUS-PAI-P-101226

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