Patents by Inventor Joseph Plachy

Joseph Plachy 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).

  • Pen gun
    Patent number: 4490935
    Abstract: A hand-held, single shot weapon having the aesthetic function and capabilities of a writing instrument such as a ballpoint pen which can be actuated by pulling axially an end tip member against spring tension to quickly fire the weapon. The weapon includes interconnected threadable end and central body portions which allow complete safety of the weapon while it is being carried.
    Type: Grant
    Filed: February 23, 1983
    Date of Patent: January 1, 1985
    Inventor: Joseph Plachy