William H. Lichfield

Person

  • Corrine, UT, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Production of layered toothpicks

    • Patent number 4,303,605
    • Issue date Dec 1, 1981
    • William H. Lichfield
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL