Granted Patent
Utility
US 4,601,820 · App. 06/592,958
Low-profile inline filter
Inventor:
Hayden Leason
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: Mar 23, 1984
Inventor
Hayden Leason
Assignee (at issue)
Filtertek 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.