4. Optics: image projectors
  5. Reflector

William C. Dawling

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External projection lens aperture

Optics: image projectors – Light shield – mask – hood – or diaphragm
Patent

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Overhead projector

Optics: image projectors – Reflector
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Random access module for slide projector

Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
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Profile ID: LFUS-PAI-P-558868

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