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Notary drill bits
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Patent number 5,119,892
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Issue date Jun 9, 1992
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Reed Tool Company Limited
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John M. Clegg
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 5,109,935
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Issue date May 5, 1992
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Reed Tool Company Limited
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Leslie R. Hawke
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E21 - EARTH DRILLING MINING
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Cutter elements for rotary drill bits
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Patent number 4,987,800
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Issue date Jan 29, 1991
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Reed Tool Company Limited
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Joseph A. Gasan
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Manufacture of rotary drill bits
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Patent number 4,878,403
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Issue date Nov 7, 1989
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Reed Tool Company Limited
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John D. Barr
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Manufacture of rotary drill bits
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Patent number 4,873,895
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Issue date Oct 17, 1989
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Reed Tool Company Limited
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Malcolm R. Taylor
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Rotary drill bits
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Patent number 4,848,491
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Issue date Jul 18, 1989
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Reed Tool Company Limited
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Paul S. Burridge
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 4,844,185
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Issue date Jul 4, 1989
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Reed Tool Company Limited
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Thomas A. Newton
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E21 - EARTH DRILLING MINING
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