Granted Patent
Utility
US 6,257,331 · App. 09/362,607
Downhole setting tool
Inventors:
Curtis G. Blount, David D. Hearn
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Jul 28, 1999
Inventors
Curtis G. Blount
David D. Hearn
Assignee (at issue)
Atlantic Richfield Company
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.