Granted Patent
Utility
US 4,397,288 · App. 06/259,473
Diesel fuel warmer
Inventor:
Gordon L. Kelling
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: May 1, 1981
Inventor
Gordon L. Kelling
Assignee (at issue)
Phillips Temro, 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.