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Cutter sharpener
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Issue date Jan 3, 2023
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Sheng Chen
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B24 - GRINDING POLISHING
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3708920
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Patent number 3,708,920
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Issue date Jan 9, 1973
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B24 - GRINDING POLISHING
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3709096
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Patent number 3,709,096
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Issue date Jan 9, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3667165
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Patent number 3,667,165
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Issue date Jun 6, 1972
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B24 - GRINDING POLISHING
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3603038
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Patent number 3,603,038
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Issue date Sep 7, 1971
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B24 - GRINDING POLISHING
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3562959
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Patent number 3,562,959
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Issue date Feb 16, 1971
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B24 - GRINDING POLISHING
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3498004
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Patent number 3,498,004
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Issue date Mar 3, 1970
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B24 - GRINDING POLISHING
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3451170
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B24 - GRINDING POLISHING
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B24 - GRINDING POLISHING
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Issue date Nov 28, 1967
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B24 - GRINDING POLISHING
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3253368
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Patent number 3,253,368
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Issue date May 31, 1966
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B24 - GRINDING POLISHING