Granted Patent
Utility
US 4,954,828 · App. 07/481,509
Long range police radar warning receiver
Inventor:
Steven K. Orr
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Feb 20, 1990
Inventor
Steven K. Orr
Assignee (at issue)
Cincinnati Microwave, 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.