4. Optics: image projectors
  5. Slide transfer mechanism
  6. Slides reciprocated horizontally
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Device for moving slides vertically in projectors

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent

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Drive for a circular magazine of a slide projector

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent

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Dual photographic slide projector

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent

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Dual photographic slide projector

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent

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Dual slide projector and tray

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent

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