Granted Patent
Utility
US 5,438,575 · App. 07/976,870
Data storage system with stale data detector and method of operation
Inventor:
Keith J. Bertrand
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Nov 16, 1992
Inventor
Keith J. Bertrand
Assignee (at issue)
Ampex 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.