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Pressure measuring device
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Patent number 4,502,336
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Issue date Mar 5, 1985
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United Technologies Corporation
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Carl S. Dudash
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G01 - MEASURING TESTING
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3543586
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Patent number 3,543,586
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Issue date Dec 1, 1970
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G01 - MEASURING TESTING
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3280632
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Patent number 3,280,632
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Issue date Oct 25, 1966
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G01 - MEASURING TESTING
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2676515
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Patent number 2,676,515
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Issue date Apr 27, 1954
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G01 - MEASURING TESTING