Granted Patent
Utility
US 6,694,897 · App. 10/313,177
Table
Inventor:
Leng Lou-Hao
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Dec 6, 2002
Inventor
Leng Lou-Hao
Assignee (at issue)
Cosco Management, Inc.
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.