4. Optical: systems and elements
  5. Projection screen
  6. With lens

Daniel P. Malloy

Examiner

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Focusing aid for copying cameras

Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent

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Method of and apparatus for determining exposure amount in copyi

Photocopying – Projection printing and copying cameras – Multicolor picture
Patent

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Video display apparatus

Optical: systems and elements – Projection screen – With lens
Patent

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Profile ID: LFUS-PAI-P-314576

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