Patents by Inventor Waldo Virgil Opfer

Waldo Virgil Opfer 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).

  • Aircraft
    Patent number: D244265
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: May 10, 1977
    Assignee: Teledyne Ryan Aeronautical a Division of Teledyne Industries, Inc.
    Inventor: Waldo Virgil Opfer