Granted Patent
Utility
US 5,163,321 · App. 07/589,054
Borehole pressure and temperature measurement system
Inventor:
Kenneth Perales
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Sep 27, 1990
Inventor
Kenneth Perales
Assignee (at issue)
Baroid Technology, 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.