Granted Patent
Utility
US 4,934,907 · App. 07/241,502
Method and apparatus for heating a fuel
Inventor:
Martin Kröner
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Sep 7, 1988
Inventor
Martin Kröner
Assignee (at issue)
J. Eberspacher
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.