Granted Patent
Utility
US 5,179,309 · App. 07/152,203
Surface acoustic wave chirp filter
Inventors:
Robert B. Stokes, Kuo-Hsiung Yen, Jeffrey H. Elliott
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Feb 4, 1988
Inventors
Robert B. Stokes
Kuo-Hsiung Yen
Jeffrey H. Elliott
Assignee (at issue)
TRW Limited
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.