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David T. Hemmings

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  • Orange, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Root-strength drill bit and method of making
    • Patent number 5,353,552
    • Issue date Oct 11, 1994
    • Megatool, Inc.
    • David T. Hemmings
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Root-strength drill bit and method of making
    • Patent number 5,184,926
    • Issue date Feb 9, 1993
    • Megatool, Inc.
    • David T. Hemmings
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Collet-wear reducing drill bit
    • Patent number 5,102,271
    • Issue date Apr 7, 1992
    • David T. Hemmings
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Multi-carrier drill bit container
    • Patent number 5,071,005
    • Issue date Dec 10, 1991
    • David T. Hemmings
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Drill bit carrying case
    • Patent number 4,598,822
    • Issue date Jul 8, 1986
    • Megatool Inc.
    • David T. Hemmings
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Composite drill for drilling circuit boards
    • Patent number 4,135,847
    • Issue date Jan 23, 1979
    • Tulon, Inc.
    • David T. Hemmings
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR