Granted Patent
Utility
US 6,505,469 · App. 09/978,915
Gas dispensing system for cryogenic liquid vessels
Inventors:
Paul Drube, Paul Sjogren
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Oct 15, 2001
Inventors
Paul Drube
Paul Sjogren
Assignee (at issue)
Chart 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.