Granted Patent
Utility
US 4,802,216 · App. 07/110,646
Interrogator and transponder test equipment
Inventors:
David J. Irwin, John T. Shaul
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Oct 15, 1987
Inventors
David J. Irwin
John T. Shaul
Assignee (at issue)
AlliedSignal, 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.