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Hole cutting tool with drill pilot
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Patent number 6,375,396
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Issue date Apr 23, 2002
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Jancy Engineering Company
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Michael D. Fangmann
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Annular hole cutter
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Patent number 5,281,060
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Issue date Jan 25, 1994
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Jancy Engineering Company
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Robert E. Strange
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Center-free drill
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Patent number 4,596,499
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Issue date Jun 24, 1986
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Jancy Engineering Company
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Michael D. Fangmann
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Arbor for rotary cutting tool
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Patent number 4,385,853
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Issue date May 31, 1983
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Jancy Engineering Co.
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Robert E. Strange
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR