Granted Patent
Utility
US 6,422,162 · App. 09/576,629
Method and apparatus for flow control of NH3
Inventors:
Spencer M. Nimberger, Kevin J. Cessac
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: May 24, 2000
Inventors
Spencer M. Nimberger
Kevin J. Cessac
Assignee (at issue)
PCI International, Ltd.
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.