Granted Patent
Utility
US 5,937,550 · App. 08/927,013
Extensible lock
Inventor:
Robert K. Emrich
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Sep 10, 1997
Inventor
Robert K. Emrich
Assignee (at issue)
ESCO GROUP 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.