Granted Patent
Utility
US 5,198,522 · App. 07/810,635
Reaction injection molding based on diethyl methylene diphenyl diisocyanate
Inventors:
David D. Steppan, Robson Mafoti, William E. Slack
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Dec 19, 1991
Inventors
David D. Steppan
Robson Mafoti
William E. Slack
Assignee (at issue)
Miles 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.