Granted Patent
Utility
US 4,332,760 · App. 06/248,138
Direct production of elastomer compound from reactor solution
Inventor:
David R. Warfel
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Mar 30, 1981
Inventor
David R. Warfel
Assignee (at issue)
Atlantic Richfield 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.