Granted Patent
Utility
US 4,649,537 · App. 06/663,526
Random pattern lock and key fault detection scheme for microprocessor systems
Inventors:
Mark A. Rosswurm, Leland L. Kessler
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Oct 22, 1984
Inventors
Mark A. Rosswurm
Leland L. Kessler
Assignee (at issue)
Westinghouse Electric Company 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.