TREA

Hartmut Ginnow-Merkert

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  • Orono, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combined crank handle hub and window sill
    • Patent number D343691
    • Issue date Jan 25, 1994
    • Andersen Corporation
    • James C. Guhl
    • D25 - Building units and construction elements
  • Information Patent Grant

    Counterbalanced window operators
    • Patent number 5,205,074
    • Issue date Apr 27, 1993
    • Andersen Corporation
    • James C. Guhl
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Crank handle
    • Patent number D331531
    • Issue date Dec 8, 1992
    • Andersen Corporation
    • James C. Guhl
    • D08 - Tools and hardware
  • Information Patent Grant

    Counterbalanced window operators
    • Patent number 5,097,629
    • Issue date Mar 24, 1992
    • Andersen Corporation
    • James C. Guhl
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sliding window apparatus and method
    • Patent number 4,976,066
    • Issue date Dec 11, 1990
    • Andersen Corporation
    • David D. Plummer
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES