Patents by Inventor Andrew William Higgins

Andrew William Higgins 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 injector
    Patent number: 5901498
    Abstract: A cylinder 16 has a piston 19 slidable therein, to force liquid from the cylinder out through a hollow needle 18. A pair of handles 11 extend outwardly from the cylinder, substantially normal thereof. Each handle carries a lever 30 pivoted thereon. In use, movement of the piston is less than the corresponding movement of a manually operable portion 32 (FIG. 1).
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: May 11, 1999
    Assignee: Simcro Tech Limited
    Inventor: Andrew William Higgins