Patents Assigned to J. F. Wirth and Sons, Inc.
  • Battery disconnect switch
    Patent number: D299822
    Type: Grant
    Filed: November 7, 1985
    Date of Patent: February 14, 1989
    Assignee: J. F. Wirth and Sons, Inc.
    Inventors: Wesley H. Constable, Roger W. Jensen, Steven E. Wirth