Granted Patent
Utility
US 4,755,336 · App. 06/862,944
Process for making polyester blend fiber
Inventors:
Martin H. G. Deeg, Norman J. Bond
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: May 14, 1986
Inventors
Martin H. G. Deeg
Norman J. Bond
Assignee (at issue)
Hoechst Celanese 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.