Patents by Inventor Cecil G. Gilstrap

Cecil G. Gilstrap 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).

  • Patent number: 5272788
    Abstract: An interchangeable handle and utility tool head system where different tool heads are used with the handle. The different tool heads have similar shanks with a screw threaded end. The handle has a female coupling on one end to receive the screw threaded shank. A positive securing device prevents rotation of the tool head relative to the handle where a keyway and key system prevents the rotation.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: December 28, 1993
    Inventor: Cecil G. Gilstrap