Granted Patent
Utility
US 4,607,701 · App. 06/667,317
Tree control manifold
Inventor:
Dag H. Gundersen
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Nov 1, 1984
Inventor
Dag H. Gundersen
Assignee (at issue)
Vetco Offshore Industries, 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.