TREA

Robert C. Tweedt

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  • Ankeny, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door with transom window
    • Patent number 5,230,376
    • Issue date Jul 27, 1993
    • Emco Enterprises, Inc., d/b/a Emco Specialties, Inc.
    • Alan H. Woodruff
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door having hidden screw construction
    • Patent number 5,230,180
    • Issue date Jul 27, 1993
    • Emco Enterprises, Inc.
    • Robert C. Tweedt
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Door edge construction
    • Patent number 5,214,880
    • Issue date Jun 1, 1993
    • Emco Enterprises, Inc.
    • Alan H. Woodruff
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents