TREA

Robert B. Rottinghaus

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  • Jesup, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door hinge spring
    • Patent number 4,815,164
    • Issue date Mar 28, 1989
    • Robert B. Rottinghaus
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES