Granted Patent
Utility
US 4,688,694 · App. 06/819,386
Safety means for pressurized gas containers
Inventors:
Kenneth L. Kirk, Robert F. O'Connor
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Jan 16, 1986
Inventors
Kenneth L. Kirk
Robert F. O'Connor
Assignee (at issue)
Amtrol, 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.