John R. Simpson

Person

  • Webster, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Poultry flooring system

    • Patent number 5,957,088
    • Issue date Sep 28, 1999
    • Riverdale Mills Corporation
    • Andrew M. Knott
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING