Granted Patent
Utility
US 4,993,051 · App. 07/308,695
Johnson counter circuit with invalid counter position detection and correction mechanism
Inventor:
Fredericus H. J. Feldbrugge
Patented Case
View Patent ↗
Granted: Feb 12, 1991
Filed: Feb 8, 1989
Inventor
Fredericus H. J. Feldbrugge
Assignee (at issue)
U.S. Philips 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.