Granted Patent
Utility
US 4,956,422 · App. 07/263,382
Blends of polyphenylene ether and modified polyesters
Inventors:
John C. Falk, Klementina Khait
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Oct 27, 1988
Inventors
John C. Falk
Klementina Khait
Assignee (at issue)
General Electric 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.