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Guardian Product Development, Inc.

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  • Danbury, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Alarm system for a card holder
    • Patent number 5,892,444
    • Issue date Apr 6, 1999
    • Guardian Product Development, Inc.
    • Kenneth E. Wittmer
    • A45 - HAND OR TRAVELLING ARTICLES

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