Granted Patent
Utility
US 5,398,721 · App. 08/257,378
Compressed gas integral regulator and flowmeter
Inventor:
David A. Pryor
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Jun 9, 1994
Inventor
David A. Pryor
Assignee (at issue)
THE ESAB GROUP 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.