Patents by Inventor Paul L. Yeffman

Paul L. Yeffman 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).

  • Shock absorbing buffer and recoil reducer
    Patent number: 4974493
    Abstract: An automatic pistol having a slide reciprocably mounted on a frame and having a plastic buffer member mounted between the pistol slide and barrel for absorbing slide impact between the slide and the frame.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: December 4, 1990
    Inventor: Paul L. Yeffman