Granted Patent
Utility
US 5,154,231 · App. 07/585,532
Whipstock assembly with hydraulically set anchor
Inventors:
Thomas F. Bailey, John E. Campbell, Larry F. Moeller
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Sep 19, 1990
Inventors
Thomas F. Bailey
John E. Campbell
Larry F. Moeller
Assignee (at issue)
Masx Energy Services Group, 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.