Granted Patent
Utility
US 5,087,909 · App. 07/395,633
Method and apparatus for radio frequency signal detection
Inventor:
Michael Twerdochlib
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Aug 18, 1989
Inventor
Michael Twerdochlib
Assignee (at issue)
Westinghouse Electric Company LLC
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.