TREA

Ed R. Martin Jr.

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  • Spring, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Steel-bodied bit
    • Patent number 6,131,677
    • Issue date Oct 17, 2000
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Steel-bodied bit
    • Patent number 5,924,502
    • Issue date Jul 20, 1999
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Seven blade drill bit
    • Patent number D405811
    • Issue date Feb 16, 1999
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Eight blade drill bit
    • Patent number D404407
    • Issue date Jan 19, 1999
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Six blade drill bit
    • Patent number D404044
    • Issue date Jan 12, 1999
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Five blade drill bit
    • Patent number D403336
    • Issue date Dec 29, 1998
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Four blade drill bit
    • Patent number D403335
    • Issue date Dec 29, 1998
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Nine blade drill bit
    • Patent number D403003
    • Issue date Dec 22, 1998
    • Dresser Industries, Inc.
    • Robert W. Arfele
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Drill bit with improved insert cutter pattern and method of drilling
    • Patent number 5,346,025
    • Issue date Sep 13, 1994
    • Dresser Industries, Inc.
    • Carl W. Keith
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drill bit with improved insert cutter pattern
    • Patent number 5,265,685
    • Issue date Nov 30, 1993
    • Dresser Industries, Inc.
    • Carl W. Keith
    • E21 - EARTH DRILLING MINING