Granted Patent
Utility
US 4,765,178 · App. 06/846,122
Hydrocarbon probe
Inventors:
David Kempf, Ford C. Jefferson, Brian Lee Chandler
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Mar 31, 1986
Inventors
David Kempf
Ford C. Jefferson
Brian Lee Chandler
Assignee (at issue)
Emhart Industries, Inc.
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.