4. Optics: image projectors
  5. Housing

Charles B. Jewison

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Foldable portable overhead projector

Optics: image projectors – Housing
Patent

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Foldable portable overhead projector

Photography and optical equipment – Projector or viewer – Overhead or opaque type
Patent

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Front/rear projection system

Optics: image projectors – Selective projection on distant or cabinet screen
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Profile ID: LFUS-PAI-P-982630

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