Granted Patent
Utility
US 4,334,223 · App. 06/160,462
Median detector
Inventor:
Kazuo Katagi
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Jun 18, 1980
Inventor
Kazuo Katagi
Assignee (at issue)
Sperry Corp.
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.