4. Photography and optical equipment
  5. Projector or viewer
  6. With provision for transparency magazine

George A. Wallace

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Incident light filter for cameras

Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent

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Incident light filter for cameras

Patent

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Incident light filter for cameras

Patent

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Method and apparatus for automating negotiations between parties

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Finance
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Ring structure for detachably mounting light diffusion disk on l

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Profile ID: LFUS-PAI-P-810622

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