Patents by Inventor Earl R. Caulkins

Earl R. Caulkins 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).

  • Collar ornament
    Patent number: D291788
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: September 8, 1987
    Inventor: Earl R. Caulkins