Granted Patent
Utility
US 5,414,839 · App. 07/901,590
Hybrid lock escalation and de-escalation protocols
Inventor:
Ashok Joshi
Patented Case
View Patent ↗
Granted: May 9, 1995
Filed: Jun 19, 1992
Inventor
Ashok Joshi
Assignee (at issue)
Digital Equipment Corporation
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.