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Internal grinding machine
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Patent number 4,527,357
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Issue date Jul 9, 1985
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Litton Industrial Products, Inc.
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William E. Shank
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B24 - GRINDING POLISHING
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3406599
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Patent number 3,406,599
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Issue date Oct 22, 1968
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B28 - WORKING CEMENT, CLAY, OR STONE
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3292468
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Patent number 3,292,468
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Issue date Dec 20, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3248780
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Patent number 3,248,780
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Issue date May 3, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3192351
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Patent number 3,192,351
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Issue date Jun 29, 1965
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3186133
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Patent number 3,186,133
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Issue date Jun 1, 1965
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B24 - GRINDING POLISHING
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3174257
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Patent number 3,174,257
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Issue date Mar 23, 1965
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B24 - GRINDING POLISHING
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3146553
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Patent number 3,146,553
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Issue date Sep 1, 1964
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B24 - GRINDING POLISHING
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2927404
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Patent number 2,927,404
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Issue date Mar 8, 1960
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2855728
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Patent number 2,855,728
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Issue date Oct 14, 1958
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B24 - GRINDING POLISHING
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2459068
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Patent number 2,459,068
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Issue date Jan 11, 1949
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B24 - GRINDING POLISHING
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2232387
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Patent number 2,232,387
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Issue date Feb 18, 1941
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B24 - GRINDING POLISHING