Durward Rutledge

Person

  • Dallas County, TX, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary extruder with a gear pump

    • Patent number 4,813,863
    • Issue date Mar 21, 1989
    • Permian Research Corporation
    • Granville J. Hahn
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL