Patents by Inventor David L. Winn

David L. Winn 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).

  • Inflatable display form
    Patent number: D256254
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: August 5, 1980
    Assignee: Winn Trading Corp.
    Inventor: David L. Winn
  • Inflatable display form
    Patent number: D256255
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: August 5, 1980
    Assignee: Winn Trading Corp.
    Inventor: David L. Winn
  • Inflatable display form
    Patent number: D256256
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: August 5, 1980
    Assignee: Winn Trading Corp.
    Inventor: David L. Winn
  • Inflatable display form
    Patent number: D256257
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: August 5, 1980
    Assignee: Winn Trading Corp.
    Inventor: David L. Winn