Granted Patent
Utility
US 5,899,906 · App. 08/591,229
Threaded washer
Inventor:
Beat Schenk
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Jan 18, 1996
Inventor
Beat Schenk
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.