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Multidirectional cutting tool
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Patent number 5,094,573
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Issue date Mar 10, 1992
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Everett D. Hougen
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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 4,952,102
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Issue date Aug 28, 1990
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Method for cutting holes
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Patent number 4,813,819
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Issue date Mar 21, 1989
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Everett D. Hougen
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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 4,632,610
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Issue date Dec 30, 1986
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Annular cutter
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Patent number 4,557,641
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Issue date Dec 10, 1985
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Annular cutter
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Patent number 4,538,944
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Issue date Sep 3, 1985
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Everett D. Hougen
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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 4,452,554
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Issue date Jun 5, 1984
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Everett D. Hougen
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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 4,322,187
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Issue date Mar 30, 1982
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Everett D. Hougen
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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 4,322,188
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Issue date Mar 30, 1982
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Magnetic base drill
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Patent number 4,261,673
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Issue date Apr 14, 1981
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Arbor for annular hole cutter
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Patent number 4,193,721
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Issue date Mar 18, 1980
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Arbor for annular hole cutter
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Patent number 4,131,384
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Issue date Dec 26, 1978
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Everett D. Hougen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Magnetic drill
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Patent number 3,969,036
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Issue date Jul 13, 1976
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Everett D. Hougen
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS