Patents Assigned to The Birger Company
  • Supporting handle
    Patent number: 4335487
    Abstract: A U-shaped cooler handle of high density polypropylene plastic has three rigid hollow blow-molded portions with adjacent portions interconnected by solid flexible webs at the corners.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: June 22, 1982
    Assignee: The Birger Company
    Inventors: Michael A. DiPierro, David E. Roche