TREA

American Welding & Manufacturing Co.

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  • Warren, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Framing structure
    • Patent number 4,628,648
    • Issue date Dec 16, 1986
    • American Welding & Manufacturing Co.
    • Rodney W. Winyard
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Steel door frame with thermal break
    • Patent number 4,594,831
    • Issue date Jun 17, 1986
    • American Welding & Manufacturing Co.
    • Rodney W. Winyard
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Trademarklast 30 trademarks