Granted Patent
Utility
US 5,439,634 · App. 08/163,962
Method and device for separating runners/sprues from parts as they are ejected from a mold
Inventor:
Robert R. North
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Dec 8, 1993
Inventor
Robert R. North
Assignee (at issue)
AT&T CORP.
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.