Granted Patent
Utility
US 4,780,284 · App. 06/831,790
Gas chromatography
Inventor:
James E. Lovelock
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Mar 27, 1986
Inventor
James E. Lovelock
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.