Granted Patent
Utility
US 5,857,812 · App. 08/809,196
Process and device for detecting and compensating for jointing and wear errors in fine drilling
Inventor:
Frank Stahl
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: May 7, 1997
Inventor
Frank Stahl
Assignee (at issue)
Komet Praezisionswerkzeuge 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.