4. Optics: image projectors
  5. Selective data retrieval

Walter Rauffer

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Collapsible microfilm reader

Optics: image projectors – Projector or screen removable from common housing
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Continuous microfilming camera

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Microfiche apparatus

Optics: image projectors – Selective data retrieval
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Microfilm reader

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

Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
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Profile ID: LFUS-PAI-P-133803

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