Granted Patent
Utility
US 6,740,433 · App. 10/054,810
Method and apparatus for monitoring a hydrogen containing gas stream
Inventor:
Ralf Senner
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jan 22, 2002
Inventor
Ralf Senner
Assignee (at issue)
General Motors 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.