Granted Patent
Utility
US 4,500,432 · App. 06/538,832
Automated sample concentrator for trace components
Inventors:
John S. Poole, Dennis R. Gere, Raymond Bell, Mark Nickerson
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Oct 4, 1983
Inventors
John S. Poole
Dennis R. Gere
Raymond Bell
Mark Nickerson
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.