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...

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