John D. Metcalf

Person

  • Akron, OH, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Drop door control for internal mixer

    • Patent number 5,492,403
    • Issue date Feb 20, 1996
    • The Goodyear Tire & Rubber Company
    • John D. Metcalf
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL