Granted Patent
Utility
US 4,653,589 · App. 06/745,052
Mudline casing hanger tieback adaptor with adjustable load ring
Inventor:
Jose M. Alandy
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Jun 17, 1985
Inventor
Jose M. Alandy
Assignee (at issue)
Vetco Gray, LLC
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.