Granted Patent
Utility
US 4,464,894 · App. 06/033,656
Spun-like continuous multifilament yarn
Inventor:
James C. Leininger
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Apr 26, 1979
Inventor
James C. Leininger
Assignee (at issue)
Phillips Petroleum 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.