Granted Patent
Utility
US 6,474,828 · App. 09/942,646
Illuminant radio communication device
Inventor:
Yuan-Cheng Chin
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Aug 31, 2001
Inventor
Yuan-Cheng Chin
Assignee (at issue)
UNITY OPTO TECHNOLOGY CO., LTD.
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.