John R. Cummings

Person

  • North Abington, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Centrifugal separator

    • Patent number 4,464,162
    • Issue date Aug 7, 1984
    • Bird Machine Company, Inc.
    • John R. Cummings
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...