Granted Patent
Utility
US 4,790,378 · App. 07/012,076
Well testing apparatus
Inventors:
Carlos E. Montgomery, Craig L. Zitterich, Ricky M. Holloman
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Feb 6, 1987
Inventors
Carlos E. Montgomery
Craig L. Zitterich
Ricky M. Holloman
Assignee (at issue)
Otis Engineering Corporation
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.