Granted Patent
Utility
US 4,948,410 · App. 07/419,223
Check valve assembly for glass forming machinery
Inventor:
Richard A. Gorski
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Oct 10, 1989
Inventor
Richard A. Gorski
Assignee (at issue)
Emhart Industries, 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.