Granted Patent
Utility
US 4,808,693 · App. 06/875,122
Aryl ether ketone copolymers
Inventors:
Klaus J. Dahl, Viktors Jansons, Stephen Moore
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Jun 17, 1986
Inventors
Klaus J. Dahl
Viktors Jansons
Stephen Moore
Assignee (at issue)
Raychem Limited
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.