Granted Patent
Utility
US 5,180,010 · App. 07/736,389
Multiple acting lock for gravel pack system
Inventors:
Gregg W. Stout, James T. Matte
Patented Case
View Patent ↗
Granted: Jan 19, 1993
Filed: Jul 26, 1991
Inventors
Gregg W. Stout
James T. Matte
Assignee (at issue)
Western Company of North America
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.