Granted Patent
Utility
US 6,302,572 · App. 09/457,548
Back vented barrel for an extruding assembly
Inventors:
Dan Cox, Steven Misiak, Tim Perry
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Dec 9, 1999
Inventors
Dan Cox
Steven Misiak
Tim Perry
Assignee (at issue)
Century Specialties
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.