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Imaging composition
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Patent number 4,100,088
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Issue date Jul 11, 1978
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Xerox Corporation
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Werner E. L. Haas
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G01 - MEASURING TESTING
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Magnetic display
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Patent number 4,076,387
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Issue date Feb 28, 1978
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Xerox Corporation
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Werner E. L. Haas
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G02 - OPTICS
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Variable density lens
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Patent number 4,066,335
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Issue date Jan 3, 1978
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Xerox Corporation
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John E. Courtney
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G02 - OPTICS
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Magnetic field detector
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Patent number 4,064,453
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Issue date Dec 20, 1977
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Xerox Corporation
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Werner E. L. Haas
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G02 - OPTICS
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Exposure system
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Patent number 3,995,954
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Issue date Dec 7, 1976
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Xerox Corporation
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Gary A. Dir
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Imaging method
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Patent number 3,972,588
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Issue date Aug 3, 1976
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Xerox Corporation
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James E. Adams
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G02 - OPTICS