Granted Patent
Utility
US 6,672,985 · App. 09/943,015
Independently rotating wheels with planetary drive
Inventors:
I-Chao Chung, Leonard R. Elliott, Michael E. Johnson
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Aug 30, 2001
Inventors
I-Chao Chung
Leonard R. Elliott
Michael E. Johnson
Assignee (at issue)
AxleTech International IP Holdings, 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.