Granted Patent
Utility
US 4,475,600 · App. 06/365,272
Subsea well completion apparatus
Inventors:
Eugene J. Cegielski, Robert Lee Wilkins
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Apr 5, 1982
Inventors
Eugene J. Cegielski
Robert Lee Wilkins
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.