Patents by Inventor David N. Ware

David N. Ware 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).

  • Ground drilling tool
    Patent number: 7255182
    Abstract: A back bit (20) is disclosed which is to used in conjunction with drilling equipment (10) which may include a derrick (11), a drilling pipe (12), a back head (14), a starting rod (13), and a cutting bit (15) mounted to the lower end of the starting rod. The back bit has a tubular body (21) with a plurality of upwardly extending cutting teeth (22).
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: August 14, 2007
    Inventor: David N. Ware