Granted Patent
Utility
US 4,235,574 · App. 06/004,242
Spinneret orifice cross-section
Inventor:
Bobby M. Phillips
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Jan 17, 1979
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.