Granted Patent
Utility
US 4,813,445 · App. 07/058,014
Apparatus for supplying fuel under negative gravity conditions
Inventor:
Chang Lu
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Jun 4, 1987
Inventor
Chang Lu
Assignee (at issue)
Parker-Hannifin Corporation
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.