Patents by Inventor Harry Birkett

Harry Birkett has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Canoe conversion kit
    Patent number: 4641594
    Abstract: A kit for use alone as an iceboat or for easy mounting on a canoe to convert the canoe to a sailboat, includes a light-weight, rectangular frame with a front crossbar for receiving a mast, a rear crossbar for supporting a seat and a rear ice runner, and a pair of arms which can be folded against the frame or extended outwardly from the front crossbar for receiving front ice runners or portions of their outer ends.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: February 10, 1987
    Inventor: Harry Birkett