TREA

John M. Conover

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  • Brown Deer, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for preserving wooden cross-tie
    • Patent number 5,236,711
    • Issue date Aug 17, 1993
    • Osmose Wood Preserving
    • David J. Ostby
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Wood preserving pad
    • Patent number 5,043,225
    • Issue date Aug 27, 1991
    • David J. Ostby
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...