Granted Patent
Utility
US 4,670,515 · App. 06/761,672
Grafted and cross-linked epm
Inventor:
Errol J. Olivier
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Aug 1, 1985
Inventor
Errol J. Olivier
Assignee (at issue)
Copolymer Rubber & Chemical 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.