Granted Patent
Utility
US 4,844,517 · App. 07/057,319
Tube coupling
Inventors:
Mark J. Beiley, Makram T. Mikhail, Patrick Callanan
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Jun 2, 1987
Inventors
Mark J. Beiley
Makram T. Mikhail
Patrick Callanan
Assignee (at issue)
Sierracin Corporation
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.