Granted Patent
Utility
US 6,648,793 · App. 10/174,329
Multi-speed planetary transmissions with fixed input and stationary members
Inventors:
Chi-Kuan Kao, Madhusudan Raghavan, Patrick B. Usoro, Norman K. Bucknor
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jun 18, 2002
Inventors
Chi-Kuan Kao
Madhusudan Raghavan
Patrick B. Usoro
Norman K. Bucknor
Assignee (at issue)
General Motors LLC
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.