Granted Patent
Utility
US 5,421,160 · App. 08/036,176
No loss fueling system for natural gas powered vehicles
Inventors:
Keith Gustafson, George W. Kalet
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Mar 23, 1993
Inventors
Keith Gustafson
George W. Kalet
Assignee (at issue)
Minnesota Valley Engineering, 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.