Granted Patent
Utility
US 4,939,271 · App. 07/293,671
Mercapto-modified N-(R-oxymethyl) acrylamide/rubber-formable monomer/(meth)acrylonitrile terpolymers
Inventor:
Richard A. Markle
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jan 5, 1989
Inventor
Richard A. Markle
Assignee (at issue)
Eagle-Picher Industries, 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.