TREA

Friedhelm Steffen

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  • Weiskirchen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    All-purpose sealing profile
    • Patent number 6,024,364
    • Issue date Feb 15, 2000
    • Saar-Gummiwerk GmbH
    • Friedhelm Steffen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Profiled seal for large gap widths
    • Patent number 5,932,312
    • Issue date Aug 3, 1999
    • Saar-Gummiwerk GmbH
    • Friedhelm Steffen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS