Patents by Inventor John L. Matheis

John L. Matheis 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).

  • Hammer
    Patent number: 3987828
    Abstract: An improved hammer for releasably holding a nail during the initial nail driving operation and providing auxiliary driving means during the nail setting operation including a preliminary driving face with associated magnetic means for releasably holding the nail while the preliminary driving blow is struck and further including a secondary driving face for setting the nail when a flattened heel is struck by a primary driving force.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: October 26, 1976
    Inventor: John L. Matheis