TREA

Siegfried Keil

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  • Gross-Bieberau, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Writing instrument
    • Patent number D443896
    • Issue date Jun 19, 2001
    • Merz & Krell GmbH & Co.
    • Hariolf Briggl
    • D19 - Office supplies
  • Information Patent Grant

    Writing instrument
    • Patent number D437888
    • Issue date Feb 20, 2001
    • Merz & Krell GmbH & Co.
    • Hariolf Briggl
    • D19 - Office supplies