Granted Patent
Utility
US 4,306,473 · App. 06/169,323
Tool insert for boring operations, particularly for a boring bar
Inventors:
Otto Eckle, Helmut Veigel
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jul 16, 1980
Inventors
Otto Eckle
Helmut Veigel
Assignee (at issue)
Komet Stahlhalter-und Werkzeugfabrik Robert Breuning GmbH
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.