Granted Patent
Utility
US 3,975,487 · App. 05/389,823
Process for spinning high modulus oxybenzoyl copolyester fibers
Inventors:
Steve G. Cottis, James Economy, Luis C. Wohrer
Patented Case
View Patent ↗
Granted: Aug 17, 1976
Filed: Aug 20, 1973
Inventors
Steve G. Cottis
James Economy
Luis C. Wohrer
Assignee (at issue)
Carborundum Corporation
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.