Patents by Inventor Delbert G. Jacobson

Delbert G. Jacobson 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).

  • Cutting tool
    Patent number: 4529022
    Abstract: A cutting tool for forming a tapered bore in a workpiece includes a pair of cutting blades pivotally supported in a slot at one end of a member and pivoted by an axially movable expander. In one embodiment, the member also has a drill bit configuration on the end of the member with the slot to initially produce the bore.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: July 16, 1985
    Inventor: Delbert G. Jacobson