Patents by Inventor Donald L. Cannon

Donald L. Cannon 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).

  • Dancing slipper with self-molding toe insert
    Patent number: 4026046
    Abstract: A dancing slipper which is made of a relatively rigid skeleton frame having an opening in the toe portion thereof and provided with a moldable insert member which is pliable and soft when mildly heated to a predetermined temperature so as to conform to the toe configuration of the wearer or ballerina or person using this shoe and which insert may be readily removable for replacement and for remolding purposes.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: May 31, 1977
    Inventors: Ann V. Clark, Frank A. Cannavo, Donald L. Cannon