Granted Patent
Utility
US 5,233,563 · App. 07/820,170
Memory security device
Inventors:
James P. Yakura, Richard K. Cole
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Jan 13, 1992
Inventors
James P. Yakura
Richard K. Cole
Assignee (at issue)
NCR 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.