Patents Assigned to Mainstream Products, Inc.
  • Kayak
    Patent number: D391916
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: March 10, 1998
    Assignee: Mainstream Products, Inc.
    Inventor: William E. Masters
  • Boat handling slots
    Patent number: D400155
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: October 27, 1998
    Assignee: Mainstream Products, Inc.
    Inventor: William E. Masters