Granted Patent
Utility
US 6,463,238 · App. 09/978,136
Upper transparency cover
Inventors:
Yin-Chun Huang, Chih-Wen Huang
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Oct 15, 2001
Inventors
Yin-Chun Huang
Chih-Wen Huang
Assignee (at issue)
Umax Data Systems, 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.