Granted Patent
Utility
US 5,531,112 · App. 08/246,842
Fluid holdup tool for deviated wells
Inventors:
Allen R. Young, Jerry L. Davidson, Edward Baltazar
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: May 20, 1994
Inventors
Allen R. Young
Jerry L. Davidson
Edward Baltazar
Assignee (at issue)
Computalog USA 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.