Granted Patent
Utility
US 4,865,447 · App. 07/211,119
Container inspection apparatus having each output demodulated at a specific source frequency
Inventor:
Timothy W. Shay
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Jun 21, 1988
Inventor
Timothy W. Shay
Assignee (at issue)
Emhart Industries, 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.