Granted Patent
Utility
US 5,487,602 · App. 08/253,397
Multi-screw, extrusion-compounding machine with modular mixing elements
Inventors:
Lefteris N. Valsamis, Eduardo L. Canedo, Jose M. Pereira, Douglas V. Poscich
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Jun 3, 1994
Inventors
Lefteris N. Valsamis
Eduardo L. Canedo
Jose M. Pereira
Douglas V. Poscich
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.