Patents by Inventor Jean Delbarre

Jean Delbarre 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).

  • Process and device for drilling the soil
    Patent number: 4542796
    Abstract: The invention concerns itself with a process and a device for drilling the soil, more particularly but not exclusively, for the purpose of laying pipelines.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: September 24, 1985
    Assignee: Electricite de France
    Inventor: Jean Delbarre