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2642167
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Patent number 2,642,167
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Issue date Jun 16, 1953
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2523822
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Patent number 2,523,822
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Issue date Sep 26, 1950
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2139301
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Patent number 2,139,301
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Issue date Dec 6, 1938
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2058545
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Patent number 2,058,545
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Issue date Oct 27, 1936
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1972377
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Patent number 1,972,377
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Issue date Sep 4, 1934
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS