Granted Patent
Utility
US 6,455,969 · App. 09/751,980
Multiple layer double rotor single stator skew symmetry permanent magnet rotating motor
Inventor:
Ping-Ho Chen
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Dec 29, 2000
Inventor
Ping-Ho Chen
Assignee (at issue)
CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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.