Patents by Inventor David John Kain

David John Kain 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).

  • Gate assembly
    Patent number: 7765737
    Abstract: A gate assembly comprising an enclosure, the enclosure being accessible by a first gate and a second gate, and gate operating means, wherein unlatching of the first gate causes the second gate to remain latched, and the second gate cannot be unlatched until the first gate is latched.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: August 3, 2010
    Inventor: David John Kain