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Valve seat and method of repair
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Patent number 5,048,558
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Issue date Sep 17, 1991
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Carl R. Calhoun
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3490486
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Patent number 3,490,486
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Issue date Jan 20, 1970
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2856775
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Patent number 2,856,775
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Issue date Oct 21, 1958
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G01 - MEASURING TESTING
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2842156
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Patent number 2,842,156
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Issue date Jul 8, 1958
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G05 - CONTROLLING REGULATING
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2756768
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Patent number 2,756,768
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Issue date Jul 31, 1956
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F22 - STEAM GENERATION
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2737973
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Patent number 2,737,973
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Issue date Mar 13, 1956
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G05 - CONTROLLING REGULATING
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2720891
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Patent number 2,720,891
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Issue date Oct 18, 1955
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G05 - CONTROLLING REGULATING
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2670006
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Patent number 2,670,006
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Issue date Feb 23, 1954
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G05 - CONTROLLING REGULATING
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2655931
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Patent number 2,655,931
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Issue date Oct 20, 1953
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E03 - WATER SUPPLY SEWERAGE
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2620819
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Patent number 2,620,819
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Issue date Dec 9, 1952
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G05 - CONTROLLING REGULATING
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2619906
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Patent number 2,619,906
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Issue date Dec 2, 1952
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G05 - CONTROLLING REGULATING
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2556801
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Patent number 2,556,801
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Issue date Jun 12, 1951
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F22 - STEAM GENERATION
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2367215
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Patent number 2,367,215
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Issue date Jan 16, 1945
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2294391
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Patent number 2,294,391
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Issue date Sep 1, 1942
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F22 - STEAM GENERATION
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2256268
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Patent number 2,256,268
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Issue date Sep 16, 1941
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F22 - STEAM GENERATION
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2254269
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Patent number 2,254,269
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Issue date Sep 2, 1941
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2207123
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Patent number 2,207,123
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Issue date Jul 9, 1940
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2133190
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Patent number 2,133,190
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Issue date Oct 11, 1938
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F22 - STEAM GENERATION
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2062095
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Patent number 2,062,095
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Issue date Nov 24, 1936
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G05 - CONTROLLING REGULATING
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1744723
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Patent number 1,744,723
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Issue date Jan 28, 1930
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F22 - STEAM GENERATION
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1733659
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Patent number 1,733,659
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Issue date Oct 29, 1929
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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1714519
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Patent number 1,714,519
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Issue date May 28, 1929
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F22 - STEAM GENERATION
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1695471
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Patent number 1,695,471
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Issue date Dec 18, 1928
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F22 - STEAM GENERATION
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1664020
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Patent number 1,664,020
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Issue date Mar 27, 1928
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1641612
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Patent number 1,641,612
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Issue date Sep 6, 1927
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F22 - STEAM GENERATION
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1624687
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Patent number 1,624,687
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Issue date Apr 12, 1927
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F22 - STEAM GENERATION
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1617437
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Patent number 1,617,437
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Issue date Feb 15, 1927
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F22 - STEAM GENERATION
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1596402
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Patent number 1,596,402
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Issue date Aug 17, 1926
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F22 - STEAM GENERATION