Granted Patent
Utility
US 4,894,413 · App. 07/107,144
Polybutadiene-epoxy-anhydride laminating resins
Inventors:
Ephraim H. Catsiff, William E. Elias
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Oct 9, 1987
Inventors
Ephraim H. Catsiff
William E. Elias
Assignee (at issue)
Hughes Aircraft 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.