Granted Patent
Utility
US 5,423,373 · App. 08/183,646
Bypass device for reservoir and intake conduit heating of power fluids
Inventor:
Charles H. Ramberg
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Jan 19, 1994
Inventor
Charles H. Ramberg
Assignee (at issue)
Arctic Fox Heaters, 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.