Connecting by rotating the metal section or the strip around its longitudinal axis

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for fabricating a compound portal frame extrusion profile

    • Patent number 4,694,552
    • Issue date Sep 22, 1987
    • Ecker Mfg. Corp.
    • Warren S. Ecker
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Insulated frame assembly

    • Patent number 4,018,022
    • Issue date Apr 19, 1977
    • Continental Aluminum Products Company
    • Frederick M. Fink
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS