Granted Patent
Utility
US 5,813,260 · App. 08/883,428
Removable core cylinder lock
Inventor:
Bo Widen
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Jun 26, 1997
Inventor
Bo Widen
Assignee (at issue)
WINLOC 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.