Granted Patent
Utility
US 6,497,633 · App. 09/464,656
Continuous manufacture of push type CVT belt bands utilizing spiral winding & welding to form tube and slitting tube to form band of predetermined width
Inventors:
Roger P. Butterfield, Mark S. Ingianni, Douglas S. Fornell
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Dec 15, 1999
Inventors
Roger P. Butterfield
Mark S. Ingianni
Douglas S. Fornell
Assignee (at issue)
BorgWarner Inc.
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.