4. Optics: image projectors
  5. Epidiascope

Robert M. Fesler

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Overhead projector with catadioptric fresnel lens

Optical: systems and elements – Lens – With multipart element
Patent

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Overhead projector with catadioptric fresnel lens

Optics: image projectors – Epidiascope
Patent

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Projector with multiple lamp light source

Optics: image projectors – Unitary plural refracting surfaces
Patent

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Profile ID: LFUS-PAI-P-667326

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