Granted Patent
Utility
US 4,673,140 · App. 06/908,844
Method and apparatus for facilitating the withdrawal of strand from wound packages
Inventor:
David Boles
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Sep 18, 1986
Inventor
David Boles
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.