4. Photography and optical equipment
  5. Projector or viewer
  6. With provision for transparency magazine

Michael V. Polinsky

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Microfiche viewer with rotatable base

Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent

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Microfilm reader

Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent

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Profile ID: LFUS-PAI-P-415024

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