TREA

John A. O'Brien Jr.

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  • Birmingham, AL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tool tensioning device for debarking machine
    • Patent number 4,673,012
    • Issue date Jun 16, 1987
    • John A. O'Brien
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Feed roll tensioning device
    • Patent number 4,643,236
    • Issue date Feb 17, 1987
    • Outboard Marine Corporation
    • John A. O'Brien
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...