Granted Patent
Utility
US 4,592,427 · App. 06/622,330
Through tubing progressing cavity pump
Inventor:
Arvid E. Morgan
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Jun 19, 1984
Inventor
Arvid E. Morgan
Assignee (at issue)
Hughes Tool Company LLC
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.