Granted Patent
Utility
US 4,680,464 · App. 06/802,548
Optical detecting system for article counting machine
Inventor:
Charles F. Bross
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Nov 27, 1985
Inventor
Charles F. Bross
Assignee (at issue)
Pennwalt 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.