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Sealing surface and method
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Patent number 4,573,690
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Issue date Mar 4, 1986
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General Motors Corporation
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Arnold O. DeHart
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3760488
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Patent number 3,760,488
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Issue date Sep 25, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3727290
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Patent number 3,727,290
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Issue date Apr 17, 1973
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3311972
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Patent number 3,311,972
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Issue date Apr 4, 1967
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3262300
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Patent number 3,262,300
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Issue date Jul 26, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3249996
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Patent number 3,249,996
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Issue date May 10, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3014272
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Patent number 3,014,272
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Issue date Dec 26, 1961
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2901629
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Patent number 2,901,629
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Issue date Aug 25, 1959
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G01 - MEASURING TESTING
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2654144
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Patent number 2,654,144
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Issue date Oct 6, 1953
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B22 - CASTING POWDER METALLURGY
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2585096
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Patent number 2,585,096
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Issue date Feb 12, 1952
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B22 - CASTING POWDER METALLURGY
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2345412
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Patent number 2,345,412
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Issue date Mar 28, 1944
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2116207
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Patent number 2,116,207
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Issue date May 3, 1938
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B22 - CASTING POWDER METALLURGY
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2074712
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Patent number 2,074,712
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Issue date Mar 23, 1937
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2021227
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Patent number 2,021,227
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Issue date Nov 19, 1935
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B22 - CASTING POWDER METALLURGY
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1779534
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Patent number 1,779,534
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Issue date Oct 28, 1930
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B22 - CASTING POWDER METALLURGY
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1762999
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Patent number 1,762,999
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Issue date Jun 10, 1930
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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1754295
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Patent number 1,754,295
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Issue date Apr 15, 1930
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B24 - GRINDING POLISHING
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1742201
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Patent number 1,742,201
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Issue date Jan 7, 1930
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1680493
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Patent number 1,680,493
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Issue date Aug 14, 1928
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B22 - CASTING POWDER METALLURGY
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1373726
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Patent number 1,373,726
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Issue date Apr 5, 1921
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...