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Hole cutter
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Patent number 4,586,857
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Issue date May 6, 1986
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Omi Kogyo Co., Ltd.
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Shohei Ohmi
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Hole cutter
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Patent number 4,573,838
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Issue date Mar 4, 1986
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Omi Kogyo Co., Ltd.
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Takashi Omi
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Rotary cutter
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Patent number 4,305,441
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Issue date Dec 15, 1981
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Ohmi Kogyo Co. Ltd.
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Shohei Ohmi
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...