Granted Patent
Utility
US 4,721,421 · App. 06/915,112
Cutting tool with chip breakers
Inventor:
Roger L. Klinger
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Oct 3, 1986
Inventor
Roger L. Klinger
Assignee (at issue)
Brubaker Tool Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.