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Ratio analyzer
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Patent number 4,694,195
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Issue date Sep 15, 1987
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The United States of America as represented by the Secretary of the Air Force
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Troy L. Stueck
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3925733
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Patent number 3,925,733
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Issue date Dec 9, 1975
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H03 - BASIC ELECTRONIC CIRCUITRY
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3870906
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Patent number 3,870,906
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Issue date Mar 11, 1975
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H03 - BASIC ELECTRONIC CIRCUITRY
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3867701
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Patent number 3,867,701
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Issue date Feb 18, 1975
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G01 - MEASURING TESTING
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3810152
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Patent number 3,810,152
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Issue date May 7, 1974
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G01 - MEASURING TESTING
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3678356
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Patent number 3,678,356
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Issue date Jul 18, 1972
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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3350637
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Patent number 3,350,637
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Issue date Oct 31, 1967
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G01 - MEASURING TESTING