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3153937
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Patent number 3,153,937
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3125089
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Patent number 3,125,089
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Issue date Mar 17, 1964
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F24 - HEATING RANGES VENTILATING
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3083581
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Patent number 3,083,581
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Issue date Apr 2, 1963
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3003359
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Patent number 3,003,359
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Issue date Oct 10, 1961
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B66 - HOISTING LIFTING HAULING
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2975777
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Patent number 2,975,777
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Issue date Mar 21, 1961
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2902889
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Patent number 2,902,889
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Issue date Sep 8, 1959
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2593421
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Patent number 2,593,421
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Issue date Apr 22, 1952
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G01 - MEASURING TESTING
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2593858
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Patent number 2,593,858
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Issue date Apr 22, 1952
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G05 - CONTROLLING REGULATING
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2522896
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Patent number 2,522,896
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2519710
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Patent number 2,519,710
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Issue date Aug 22, 1950
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A63 - SPORTS GAMES AMUSEMENTS
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2511580
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Patent number 2,511,580
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H03 - BASIC ELECTRONIC CIRCUITRY
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2475225
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Patent number 2,475,225
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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2446788
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Patent number 2,446,788
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2433159
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Patent number 2,433,159
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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2313633
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Patent number 2,313,633
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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2246034
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Patent number 2,246,034
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Issue date Jun 17, 1941
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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2239663
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Patent number 2,239,663
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Issue date Apr 22, 1941
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2203834
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Patent number 2,203,834
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2177965
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Patent number 2,177,965
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G07 - CHECKING-DEVICES
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2164597
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Patent number 2,164,597
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2118154
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Patent number 2,118,154
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2109281
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Patent number 2,109,281
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2033686
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Patent number 2,033,686
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1961243
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Patent number 1,961,243
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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1869580
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Patent number 1,869,580
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B61 - RAILWAYS
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1856038
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Patent number 1,856,038
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G07 - CHECKING-DEVICES
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1832160
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Patent number 1,832,160
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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1793758
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Patent number 1,793,758
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Issue date Feb 24, 1931
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