Granted Patent
Utility
US 4,756,489 · App. 07/111,543
Method and apparatus for guiding filamentary material onto a reel
Inventor:
Joseph G. C. C. De Varennes
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Oct 23, 1987
Inventor
Joseph G. C. C. De Varennes
Assignee (at issue)
Nortel Networks Limited
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.