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3867686
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Patent number 3,867,686
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Issue date Feb 18, 1975
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G01 - MEASURING TESTING
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3604976
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Patent number 3,604,976
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Issue date Sep 14, 1971
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G01 - MEASURING TESTING
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3515982
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Patent number 3,515,982
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Issue date Jun 2, 1970
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G01 - MEASURING TESTING
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3467857
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Patent number 3,467,857
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Issue date Sep 16, 1969
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G01 - MEASURING TESTING
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3454872
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Patent number 3,454,872
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Issue date Jul 8, 1969
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G01 - MEASURING TESTING
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3398357
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Patent number 3,398,357
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Issue date Aug 20, 1968
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G01 - MEASURING TESTING
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3373350
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Patent number 3,373,350
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Issue date Mar 12, 1968
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G01 - MEASURING TESTING
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3064183
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Patent number 3,064,183
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Issue date Nov 13, 1962
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G01 - MEASURING TESTING
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3038116
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Patent number 3,038,116
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Issue date Jun 5, 1962
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G01 - MEASURING TESTING
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3021476
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Patent number 3,021,476
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Issue date Feb 13, 1962
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G01 - MEASURING TESTING
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2898548
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Patent number 2,898,548
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Issue date Aug 4, 1959
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G01 - MEASURING TESTING
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2888639
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Patent number 2,888,639
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Issue date May 26, 1959
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G01 - MEASURING TESTING
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2819446
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Patent number 2,819,446
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Issue date Jan 7, 1958
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G01 - MEASURING TESTING