TREA

Ellwin L. Coulston

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  • Niles, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Framing member for curtain wall structures
    • Patent number 4,377,926
    • Issue date Mar 29, 1983
    • Kawneer Company, Inc.
    • Ellwin L. Coulston
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Heat insulating flashing
    • Patent number 4,267,673
    • Issue date May 19, 1981
    • Kawneer Company, Inc.
    • Ellwin L. Coulston
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Weatherstripping
    • Patent number 4,157,634
    • Issue date Jun 12, 1979
    • Kawneer Company, Inc.
    • Ellwin L. Coulston
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS