Granted Patent
Utility
US 5,352,760 · App. 08/019,373
Polymerization of oligomeric multiple aromatic ether-containing phthalonitriles
Inventor:
Teddy M. Keller
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Feb 18, 1993
Inventor
Teddy M. Keller
Assignee (at issue)
The United States of America, as represented by the Secretary of the Navy
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.