Granted Patent
Utility
US 4,714,390 · App. 06/885,068
Boring tool
Inventors:
Otto Eckle, Walter Roser
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Jul 14, 1986
Inventors
Otto Eckle
Walter Roser
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.