Granted Patent
Utility
US 6,289,722 · App. 09/348,241
Helium leak tester for vehicle fuel tanks
Inventors:
Paul Dale Lycan, Aaron Schellenberg
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Jul 6, 1999
Inventors
Paul Dale Lycan
Aaron Schellenberg
Assignee (at issue)
Visteon Global Technologies, 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.