Patents by Inventor John Hammes

John Hammes 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).

  • Electronic defensive weapon
    Patent number: 4688140
    Abstract: In an electronic stun gun device comprising a pair of contact probes exposed on opposite sides at the top of a case and a pair of test gap probes extending into a cavity separating the contact probes, the improvement comprises a test gap probe guard means secured adjacent the top of the case and extending along the cavity between the contact probes or test gap probes to prevent an object from entering the cavity to short across the test gap probes.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: August 18, 1987
    Inventor: John Hammes