Granted Patent
Utility
US 4,245,517 · App. 06/001,048
Method and apparatus for measuring modulus of a plastic polymer
Inventors:
Robert I. Barker, Patrick F. Rice
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jan 5, 1979
Inventors
Robert I. Barker
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.