Granted Patent
Utility
US 4,579,936 · App. 06/609,367
Ethylene terephthalate copolymers
Inventor:
George J. O'Neill
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: May 11, 1984
Inventor
George J. O'Neill
Assignee (at issue)
EASTMAN KODAK 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.