Granted Patent
Utility
US 5,276,449 · App. 07/945,750
Radar retroreflector with polarization control
Inventor:
John B. Walsh
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Sep 16, 1992
Inventor
John B. Walsh
Assignee (at issue)
The Boeing Company
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.