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3531763
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Patent number 3,531,763
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Issue date Sep 29, 1970
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G01 - MEASURING TESTING
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3459931
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Patent number 3,459,931
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Issue date Aug 5, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3459930
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Patent number 3,459,930
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Issue date Aug 5, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3371196
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Patent number 3,371,196
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Issue date Feb 27, 1968
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G06 - COMPUTING CALCULATING COUNTING
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3273113
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Patent number 3,273,113
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Issue date Sep 13, 1966
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G06 - COMPUTING CALCULATING COUNTING
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3213411
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Patent number 3,213,411
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Issue date Oct 19, 1965
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G01 - MEASURING TESTING
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3209134
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Patent number 3,209,134
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Issue date Sep 28, 1965
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G06 - COMPUTING CALCULATING COUNTING
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3193797
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Patent number 3,193,797
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Issue date Jul 6, 1965
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G01 - MEASURING TESTING