Patents by Inventor Marina Letendre

Marina Letendre 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).

  • Double sleeve soil tester
    Patent number: 6729417
    Abstract: A soil tester combination is provided that has an elongated rigid outer semi-cylindrical sleeve with a sharp narrowed outer sleeve end and a handle mounted on an opposite outer sleeve end, and a similar inner sleeve having a plurality of ledges bridging the walls of the inner sleeve at various depths.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: May 4, 2004
    Inventor: Marina Letendre
  • Double sleeve soil tester
    Publication number: 20030201124
    Abstract: A soil tester combination is provided that has an elongated rigid outer semi-cylindrical sleeve with a sharp narrowed outer sleeve end and a handle mounted on an opposite outer sleeve end, and a similar inner sleeve having a plurality of ledges bridging the walls of the inner sleeve at various depths.
    Type: Application
    Filed: April 30, 2002
    Publication date: October 30, 2003
    Inventor: Marina Letendre