Granted Patent
Utility
US 4,852,915 · App. 07/176,266
Shut-off and locking assembly for swivel gladhand
Inventor:
Sergio Campanini
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Mar 31, 1988
Inventor
Sergio Campanini
Assignee (at issue)
Hose America, 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.