Granted Patent
Utility
US 4,398,561 · App. 06/248,399
Quick disconnect coupling with locked valving
Inventor:
Ojars Maldavs
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Mar 27, 1981
Inventor
Ojars Maldavs
Assignee (at issue)
Imperial Clevite 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.