Granted Patent
Utility
US 4,229,718 · App. 06/031,644
Wide-bandwidth monolithic crystal filter
Inventors:
Aristotelis S. Arvanitis, Thomas Re, Stanley J. Malinowski
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Apr 19, 1979
Inventors
Aristotelis S. Arvanitis
Thomas Re
Stanley J. Malinowski
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.