4. Optics: image projectors
  5. Selective data retrieval
  6. Plural picture rows on single microcard
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Optical and focusing arrangement for microfiche reader

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

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Optical image projector

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

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Overhead projector

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

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Overhead type file sheet projectors, and file sheets and jacket

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

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