Granted Patent
Utility
US 4,566,290 · App. 06/479,127
Capillary fin media
Inventor:
Roy T. Otterbein
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Mar 28, 1983
Inventor
Roy T. Otterbein
Assignee (at issue)
Arvin Industries, 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.