Granted Patent
Utility
US 4,229,970 · App. 06/001,136
Method and apparatus for measuring the rheological properties of an extrudable material
Inventors:
Robert I. Barker, David P. King, Patrick F. Rice
Patented Case
View Patent ↗
Granted: Oct 28, 1980
Filed: Jan 5, 1979
Inventors
Robert I. Barker
David P. King
Patrick F. Rice
Assignee (at issue)
Monsanto Company
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.