Patents by Inventor Graham Richard Due

Graham Richard Due 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).

  • Tubular plant guard with releasable fastener strip
    Patent number: 5809690
    Abstract: A plant guard is formed from a panel of plastics material which is folded into a tubular shape with the adjacent vertical margins of the panel being connected together by a reclosable zip-type fastener which comprises fastener strips. Each strip has a locking profile portion which is adapted to releasably interlock with the locking profile portion of the other strip. The fastener strips are secured to opposite edge portions of the panel by heat welding or by an adhesive.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: September 22, 1998
    Assignee: Gro-Guard Australia Pty Ltd
    Inventors: Graham Richard Due, Leigh Gryst