Granted Patent
Utility
US 5,481,181 · App. 08/283,457
Real-time toxic metals monitor device and method
Inventors:
John McHardy, Carl W. Townsend, Clifford A. Megerle
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Aug 1, 1994
Inventors
John McHardy
Carl W. Townsend
Clifford A. Megerle
Assignee (at issue)
Hughes Aircraft 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.