Granted Patent
Utility
US 4,510,585 · App. 06/199,536
Electronic filter
Inventors:
Franklin W. Mayo, Miles A. Smither
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: Oct 22, 1980
Inventors
Franklin W. Mayo
Miles A. Smither
Assignee (at issue)
Geosource, 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.