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Rotary cutting saw
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Patent number 7,021,307
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Issue date Apr 4, 2006
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Noritake Co., Limited
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Seiya Ogata
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B24 - GRINDING POLISHING
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Diamond cutting saw blades
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Patent number 5,433,187
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Issue date Jul 18, 1995
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Noritake Diamond Industries Co., Ltd.
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Kenji Hayasaka
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B28 - WORKING CEMENT, CLAY, OR STONE