Granted Patent
Utility
US 4,000,219 · App. 05/571,328
EPDM compositions with improved paintability
Inventor:
Joseph P. Smejkal
Patented Case
View Patent ↗
Granted: Dec 28, 1976
Filed: Apr 24, 1975
Inventor
Joseph P. Smejkal
Assignee (at issue)
BorgWarner 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.