Granted Patent
Utility
US 4,386,656 · App. 06/161,432
Tubing hanger landing and orienting tool
Inventors:
Edmund A. Fisher, Henry W. Miller
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Jun 20, 1980
Inventors
Edmund A. Fisher
Henry W. Miller
Assignee (at issue)
Cameron Iron Works, 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.