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3644048
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Patent number 3,644,048
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Issue date Feb 22, 1972
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G01 - MEASURING TESTING
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3447877
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Patent number 3,447,877
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Issue date Jun 3, 1969
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G01 - MEASURING TESTING
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3416867
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Patent number 3,416,867
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Issue date Dec 17, 1968
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3416866
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Patent number 3,416,866
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Issue date Dec 17, 1968
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G01 - MEASURING TESTING
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3413066
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Patent number 3,413,066
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Issue date Nov 26, 1968
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G01 - MEASURING TESTING
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3368447
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Patent number 3,368,447
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Issue date Feb 13, 1968
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G01 - MEASURING TESTING
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3357230
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Patent number 3,357,230
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Issue date Dec 12, 1967
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3323431
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Patent number 3,323,431
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Issue date Jun 6, 1967
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G01 - MEASURING TESTING
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3323430
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Patent number 3,323,430
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Issue date Jun 6, 1967
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G01 - MEASURING TESTING
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3315579
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Patent number 3,315,579
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Issue date Apr 25, 1967
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3203310
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Patent number 3,203,310
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Issue date Aug 31, 1965
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G01 - MEASURING TESTING
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3187652
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Patent number 3,187,652
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Issue date Jun 8, 1965
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G01 - MEASURING TESTING
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2933010
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Patent number 2,933,010
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Issue date Apr 19, 1960
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G01 - MEASURING TESTING
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2899859
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Patent number 2,899,859
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Issue date Aug 18, 1959
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G01 - MEASURING TESTING
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2795168
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Patent number 2,795,168
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Issue date Jun 11, 1957
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G01 - MEASURING TESTING