Granted Patent
Utility
US 4,298,849 · App. 06/085,081
Duall-passband surface acoustic wave filter
Inventor:
Steven H. Arneson
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Oct 15, 1979
Inventor
Steven H. Arneson
Assignee (at issue)
Motorola, Inc.
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.