Granted Patent
Utility
US 6,676,054 · App. 10/100,811
Unwinder for as-spun elastomeric fiber
Inventors:
Daniel Heaney, Jon Graverson, Dennis Hicks, Kenneth E. Martin
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Mar 19, 2002
Inventors
Daniel Heaney
Jon Graverson
Dennis Hicks
Kenneth E. Martin
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.