Patents by Inventor George D. Canfield

George D. Canfield 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).

  • Two-ply cassette album and method of making same
    Patent number: 4641750
    Abstract: A two-ply, book-style album (10) comprises an inside tray sheet (12) and an outside cover sheet (14). Sheets (12 and 14) are preferably formed of high-density polyethylene, and are thermally heat-sealed together by means of a peripheral seal (34) and spine rules (36). The spine rules (36) include longitudinal grooves (38) formed to a substantial depth into the front surface of the inside tray sheet (12) in order to define living hinges which provide a roundish, less square spine of more pleasing appearance.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: February 10, 1987
    Assignee: Blackbourn, Inc.
    Inventors: Breck J. Johnson, George D. Canfield