Granted Patent
Utility
US 4,458,903 · App. 06/453,556
Control line sealing connection
Inventor:
Henry O. Tohill
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Dec 27, 1982
Inventor
Henry O. Tohill
Assignee (at issue)
W-K-M Wellhead Systems, 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.