Granted Patent
Utility
US 4,545,560 · App. 06/474,763
Valve coupling
Inventors:
Luc Marcadet, Michel Ozanne
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Mar 14, 1983
Inventors
Luc Marcadet
Michel Ozanne
Assignee (at issue)
Dresser 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.