Granted Patent
Utility
US 4,281,765 · App. 06/065,371
Article-detect signal separating network
Inventors:
Charles R. Brazell, Joseph A. Villanueva
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Aug 9, 1979
Inventors
Charles R. Brazell
Joseph A. Villanueva
Assignee (at issue)
Geosource, Inc.
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.