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3720453
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Patent number 3,720,453
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Issue date Mar 13, 1973
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3706080
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Patent number 3,706,080
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Issue date Dec 12, 1972
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3698010
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Patent number 3,698,010
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Issue date Oct 10, 1972
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3625583
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Patent number 3,625,583
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Issue date Dec 7, 1971
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3610721
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Patent number 3,610,721
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Issue date Oct 5, 1971
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G02 - OPTICS
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3588439
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Patent number 3,588,439
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Issue date Jun 28, 1971
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR