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Inner surface finishing tool
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Patent number 10,857,650
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Issue date Dec 8, 2020
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SUGINO MACHINE LIMITED
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Shinya Miyauchi
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B24 - GRINDING POLISHING
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Rotary peening tool
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Patent number 5,727,995
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Issue date Mar 17, 1998
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Trelawny Pneumatic Tools Division of Fulton Group Ltd.
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Brian Godfrey Harkins
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B24 - GRINDING POLISHING
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Rotopeening method
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Patent number 4,616,497
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Issue date Oct 14, 1986
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Westinghouse Electric Corp.
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Douglas G. Harman
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C21 - METALLURGY OF IRON
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Peening tool
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Patent number 3,934,443
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Issue date Jan 27, 1976
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David P. Keen
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B24 - GRINDING POLISHING
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3731355
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Patent number 3,731,355
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Issue date May 8, 1973
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B24 - GRINDING POLISHING
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3610008
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Patent number 3,610,008
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Issue date Oct 5, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3517533
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Patent number 3,517,533
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Issue date Jun 30, 1970
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B24 - GRINDING POLISHING
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3444714
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Patent number 3,444,714
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Issue date May 20, 1969
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B24 - GRINDING POLISHING
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2442009
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Patent number 2,442,009
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Issue date May 25, 1948
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B24 - GRINDING POLISHING
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2373871
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Patent number 2,373,871
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Issue date Apr 17, 1945
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C21 - METALLURGY OF IRON
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2069099
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Patent number 2,069,099
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Issue date Jan 26, 1937
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B24 - GRINDING POLISHING