Patents by Inventor John Barry DeRay

John Barry DeRay 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).

  • Tree house elevator
    Patent number: 10196239
    Abstract: This elevator provides a travelling system between the ground and a higher level, such as a tree limb, in places where guide rails, towers or other structures may be impractical. The elevator has a pipe body which is stabilized by, and rides on, a cable or rope guide.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: February 5, 2019
    Inventor: John Barry DeRay