Patents by Inventor James E. Calnin

James E. Calnin 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).

  • Carpet cleaning tool
    Patent number: D318545
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: July 23, 1991
    Assignee: Shell Chemical (Australia) Proprietary Limited
    Inventor: James E. Calnin
  • Carpet cleaning tool
    Patent number: D319119
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: August 13, 1991
    Assignee: Shell Chemical (Australia) Proprietory Limited
    Inventor: James E. Calnin