Granted Patent
Utility
US 4,707,409 · App. 06/890,270
Spinneret orifices and four-wing filament cross-sections therefrom
Inventor:
Bobby M. Phillips
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Jul 29, 1986
Inventor
Bobby M. Phillips
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.