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Power transmission shaft
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Patent number 7,399,230
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Issue date Jul 15, 2008
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NTN Corporation
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Katsuhiro Sakurai
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C21 - METALLURGY OF IRON
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Method for forming rail clips
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Patent number 4,325,511
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Issue date Apr 20, 1982
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Ralph McKay Limited
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Hartley F. Young
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Deformable metallic element
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Patent number 4,125,929
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Issue date Nov 21, 1978
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Temper Corporation
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John E. Rode
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3890690
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Patent number 3,890,690
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Issue date Jun 24, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3619893
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Patent number 3,619,893
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Issue date Nov 16, 1971
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B22 - CASTING POWDER METALLURGY
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3195221
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Patent number 3,195,221
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Issue date Jul 20, 1965
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3117036
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Patent number 3,117,036
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Issue date Jan 7, 1964
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3110086
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Patent number 3,110,086
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Issue date Nov 12, 1963
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2703297
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Issue date Mar 1, 1955
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C21 - METALLURGY OF IRON
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2424087
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Patent number 2,424,087
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Issue date Jul 15, 1947
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2294137
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Patent number 2,294,137
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Issue date Aug 25, 1942
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F28 - HEAT EXCHANGE IN GENERAL
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2280686
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Patent number 2,280,686
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Issue date Apr 21, 1942
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2241735
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Patent number 2,241,735
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Issue date May 13, 1941
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2126717
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Patent number 2,126,717
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Issue date Aug 16, 1938
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A63 - SPORTS GAMES AMUSEMENTS
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2124406
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Patent number 2,124,406
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Issue date Jul 19, 1938
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B60 - VEHICLES IN GENERAL
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2123169
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Patent number 2,123,169
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Issue date Jul 12, 1938
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2118317
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Patent number 2,118,317
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Issue date May 24, 1938
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2086841
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Issue date Jul 13, 1937
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2058109
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Patent number 2,058,109
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Issue date Oct 20, 1936
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H01 - BASIC ELECTRIC ELEMENTS