Granted Patent
Utility
US 4,921,048 · App. 07/247,760
Well production optimizing system
Inventors:
Robert W. Crow, Ricky M. Holloman, James B. Pruden
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Sep 22, 1988
Inventors
Robert W. Crow
Ricky M. Holloman
James B. Pruden
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.