Granted Patent
Utility
US 4,319,604 · App. 06/122,136
Safety shut-off valve
Inventor:
Robert E. Bird
Patented Case
View Patent ↗
Granted: Mar 16, 1982
Filed: Feb 19, 1980
Inventor
Robert E. Bird
Assignee (at issue)
Modern Engineering Company, 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.