4. Photocopying
  5. Contact printing
  6. Light boxes

Walter B. Sherwood

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Electrostatographic machine with screening

Photocopying – Contact printing – Light boxes
Patent

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Film cassette with film exposure status indicia

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Video
Patent

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Toner fuser having an offset preventing liquid applying means an

Photocopying – Contact printing – Light boxes
Patent

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Profile ID: LFUS-PAI-P-980345

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