Granted Patent
Utility
US 5,219,174 · App. 07/804,595
Drill chuck for a drill to be used particularly for surgical purposes
Inventors:
Andreas Zurbrugg, Jurg Schaufelberger
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Dec 10, 1991
Inventors
Andreas Zurbrugg
Jurg Schaufelberger
Assignee (at issue)
Synthes USA, LLC
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.