Patents by Inventor Douglas M. Crowe

Douglas M. Crowe 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).

  • Patent number: D256865
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: September 16, 1980
    Assignee: Smith & Stone Limited
    Inventor: Douglas M. Crowe
  • Patent number: D259310
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: May 26, 1981
    Assignee: Smith & Stone Limited
    Inventor: Douglas M. Crowe
  • Patent number: D259374
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: June 2, 1981
    Assignee: Smith & Stone Limited
    Inventor: Douglas M. Crowe