Patents by Inventor Geoffrey Y. Gill

Geoffrey Y. Gill 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).

  • Spade drill with replaceable cutting-insert carrier
    Patent number: 4642001
    Abstract: This spade drill has an elongated holder with a standard driving configuration at one end, and adapted at the axially opposite end to receive a carrier block provided with receptacles for receiving indexable standard cutting inserts of extremely hard alloy.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: February 10, 1987
    Inventors: Geoffrey Y. Gill, Paul H. Hunter, Gerard W. Venlet