TREA

Elm Window Co.

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  • Cincinnati, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    High security tamper-proof mailbox
    • Patent number 4,290,548
    • Issue date Sep 22, 1981
    • Elm Window Co.
    • Norbert J. Denhart
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...