Granted Patent
Utility
US 6,830,502 · App. 10/220,362
Reaming tool with a guide shank
Inventors:
Otto Buettiker, John Stanley Christoffel, Roman Eigenmann
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Nov 4, 2002
Inventors
Otto Buettiker
John Stanley Christoffel
Roman Eigenmann
Assignee (at issue)
Dihart AG
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.