Granted Patent
Utility
US 4,408,977 · App. 06/391,082
Spinneret orifice cross-sections
Inventor:
Bobby M. Phillips
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jun 21, 1982
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.