Granted Patent
Utility
US 5,346,016 · App. 08/051,032
Apparatus and method for centralizing pipe in a wellbore
Inventors:
Dennis R. Wilson, Jack H. Cole, Wilber R. Moyer, Larry K. Moran
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Apr 20, 1993
Inventors
Dennis R. Wilson
Jack H. Cole
Wilber R. Moyer
Larry K. Moran
Assignee (at issue)
Conoco 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.