Granted Patent
Utility
US 5,138,869 · App. 07/628,490
In-line detector system for real-time determination of impurity concentration in a flowing gas stream
Inventor:
Glenn M. Tom
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Dec 14, 1990
Inventor
Glenn M. Tom
Assignee (at issue)
Novapure Corporation
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.