Granted Patent
Utility
US 4,616,704 · App. 06/759,384
Control line protector for use on a well tubular member
Inventor:
Russell A. Johnston
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Jul 26, 1985
Inventor
Russell A. Johnston
Assignee (at issue)
Camco 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.