TREA

David A. Theisen

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  • Hampstead, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Illuminated safety helmet
    • Patent number 6,497,493
    • Issue date Dec 24, 2002
    • Marpac Corporation
    • David A. Theisen
    • F21 - LIGHTING
  • Information Patent Grant

    Safety light
    • Patent number 6,406,164
    • Issue date Jun 18, 2002
    • Marpac Corporation
    • Jeffrey R. Small
    • B60 - VEHICLES IN GENERAL