4. Photocopying
  5. Projection printing and copying cameras
  6. With focusing or projection screen

William E. Jackson

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Adjustable frame liquid level measuring device

Measuring and testing – Liquid level or depth gauge – Float
Patent

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Automatic film retriever

Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent

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Cassette tape player

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent

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CB Radio accessory unit

Patent

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Collapsible liquid level measuring device

Measuring and testing – Liquid level or depth gauge – Float
Patent

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Profile ID: LFUS-PAI-P-234004

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