Granted Patent
Utility
US 5,116,215 · App. 07/726,227
Accumulator head for extrusion blow molding machine
Inventor:
John S. Hsu
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Jul 5, 1991
Inventor
John S. Hsu
Assignee (at issue)
Cincinnatti Milacron 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.