Granted Patent
Utility
US 4,970,246 · App. 07/265,545
Acetylene storage vessel filler and method
Inventors:
Paul S. O'Neal, Michael Camp
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Nov 1, 1988
Inventors
Paul S. O'Neal
Michael Camp
Assignee (at issue)
Coyne Cylinder Company
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.