Granted Patent
Utility
US 6,173,227 · App. 09/091,909
Method of setting the transmission ratio of a continuously variable gear
Inventors:
Patrick Speicher, Udo Gillich, Wolfgang Danz, Ralf Vorndran
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Jun 24, 1998
Inventors
Patrick Speicher
Udo Gillich
Wolfgang Danz
Ralf Vorndran
Assignee (at issue)
ZF Friedrichshafen AG
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.