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Paul Frei

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Patents Grantslast 30 patents

  • Information Patent Grant

    Venetian blind construction
    • Patent number 4,334,572
    • Issue date Jun 15, 1982
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Venetian blind
    • Patent number 4,324,284
    • Issue date Apr 13, 1982
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Venetian blind construction
    • Patent number 4,199,019
    • Issue date Apr 22, 1980
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Venetian blind construction
    • Patent number 4,168,735
    • Issue date Sep 25, 1979
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Venetian blind construction
    • Patent number 4,155,395
    • Issue date May 22, 1979
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Foldable rolling shutters
    • Patent number 4,013,113
    • Issue date Mar 22, 1977
    • Griesser AG
    • Paul Frei
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS