Granted Patent
Utility
US 4,907,960 · App. 07/228,771
Hydraulic system for a toggle-type plastic injection molding machine capable of precision coining
Inventor:
Ronald A. Hertzer
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Aug 4, 1988
Inventor
Ronald A. Hertzer
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.