Granted Patent
Utility
US 5,762,848 · App. 08/735,002
Method of adjusting choke gap of plastic extruder apparatus
Inventor:
Robert W. Beckwith
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Oct 22, 1996
Inventor
Robert W. Beckwith
Assignee (at issue)
SENCORP SYSTEMS, 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.