Douglas H. Rigerman

Person

  • Leroy, NY, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Manway lift assist

    • Patent number 5,038,520
    • Issue date Aug 13, 1991
    • The Pfaudler Companies, Inc.
    • Franklyn J. Amorese
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES