Granted Patent
Utility
US 4,538,680 · App. 06/384,508
Gun below packer completion tool string
Inventors:
Emmet F. Brieger, Flint R. George, Edward A. Colle, Jr.
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jun 3, 1982
Inventors
Emmet F. Brieger
Flint R. George
Edward A. Colle, Jr.
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.