Granted Patent
Utility
US 4,549,087 · App. 06/451,921
Lead sensing system
Inventors:
Robert J. Duncen, Richard B. Maxner, Jean A. McLean, William H. Mirley, Jr.
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Dec 27, 1982
Inventors
Robert J. Duncen
Richard B. Maxner
Jean A. McLean
William H. Mirley, Jr.
Assignee (at issue)
USM Holding AG
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.