Granted Patent
Utility
US 5,261,740 · App. 07/711,449
One-piece cylindrical extruder barrel assembled with eccentric converging hopper for receiving molten plastic materials
Inventors:
Douglas E. Mosher, Stuart Sardinskas
Patented Case
View Patent ↗
Granted: Nov 16, 1993
Filed: Jun 6, 1991
Inventors
Douglas E. Mosher
Stuart Sardinskas
Assignee (at issue)
Farrel Corporation
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.