Patents by Inventor Littleton P. Dryden

Littleton P. Dryden 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).

  • Bird feeder
    Patent number: D244786
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: June 21, 1977
    Assignee: Premier Manufacturing Co.
    Inventor: Littleton P. Dryden