Granted Patent
Utility
US 4,879,352 · App. 07/291,964
Adducts of an aminoalcohol and nitrile rubber
Inventors:
Janet B. Fulton, Philip D. Edwards
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Dec 30, 1988
Inventors
Janet B. Fulton
Philip D. Edwards
Assignee (at issue)
Polytec GmbH
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.