Granted Patent
Utility
US 4,952,833 · App. 07/327,443
High density surface acoustic waveguide channelizer
Inventor:
Carl E. Nothnick
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Mar 22, 1989
Inventor
Carl E. Nothnick
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.