Granted Patent
Utility
US 4,245,221 · App. 06/033,826
FM-CW Radar ranging system with automatic calibration
Inventors:
Ronald W. Kipp, Henry C. Johnson
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Apr 27, 1979
Inventors
Ronald W. Kipp
Henry C. Johnson
Assignee (at issue)
RCA 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.