Granted Patent
Utility
US 4,406,466 · App. 06/445,121
Gas lift bearing and oil seal
Inventor:
Carl H. Geary
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Nov 29, 1982
Inventor
Carl H. Geary
Assignee (at issue)
Elliott Turbomachinery Co., 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.