Granted Patent
Utility
US 4,593,184 · App. 06/524,856
Counterfeit detection circuit
Inventors:
David R. Bryce, William Sherman, III
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Aug 19, 1983
Inventors
David R. Bryce
William Sherman, III
Assignee (at issue)
THE BRANDT COMPANIES, 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.