Granted Patent
Utility
US 5,688,201 · App. 08/510,595
Traction drive
Inventor:
Rao-Sheng Zhou
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Aug 3, 1995
Inventor
Rao-Sheng Zhou
Assignee (at issue)
THE TIMKEN 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.