Granted Patent
Utility
US 4,436,166 · App. 06/169,676
Downhole vortex generator and method
Inventors:
Asadollah Hayatdavoudi, Ladd M. Adams
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Jul 17, 1980
Inventors
Asadollah Hayatdavoudi
Ladd M. Adams
Assignee (at issue)
Gill Industries, 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.