David M. Wardell

Person

  • Kirkland, WA, US

Patents Applicationslast 30 patents

  • Information Patent Application

    Tireless rotary mixer

    • Publication number 20020006075
    • Publication date Jan 17, 2002
    • ASPHALT EQUIPOMENT & SERVICE COMPANY Washington Corporation
    • John D. Ferris
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL