David A. Wilk deceased

Person

  • late of West Warwick, RI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Dry pipe valve accelerator

    • Patent number 4,570,719
    • Issue date Feb 18, 1986
    • Grinnell Fire Protection Systems Company, Inc.
    • David A. Wilk
    • A62 - LIFE-SAVING FIRE-FIGHTING