Granted Patent
Utility
US 4,501,331 · App. 06/584,654
Method of completing a well
Inventor:
Emmet F. Brieger
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Feb 29, 1984
Inventor
Emmet F. Brieger
Assignee (at issue)
Geo Vann, 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.