Granted Patent
Utility
US 5,591,894 · App. 08/543,396
Hydrogen sampler for molten metal and method
Inventors:
Richard A. Falk, Robert W. Nott
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Oct 16, 1995
Inventors
Richard A. Falk
Robert W. Nott
Assignee (at issue)
MIDWEST INSTRUMENT COMPANY
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.