Granted Patent
Utility
US 5,694,985 · App. 08/544,870
System and method for compressing natural gas and for refueling motor vehicles
Inventor:
David A. Diggins
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Oct 18, 1995
Inventor
David A. Diggins
Assignee (at issue)
Pinnacle CNG Systems, LLC
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.