Granted Patent
Utility
US 4,430,978 · App. 06/306,259
Direct liquid injection of liquid petroleum gas
Inventors:
Donald J. Lewis, Jack R. Phipps
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Sep 28, 1981
Inventors
Donald J. Lewis
Jack R. Phipps
Assignee (at issue)
Bendix Limited
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.