Granted Patent
Utility
US 6,774,583 · App. 10/110,749
Numerical controlled colour light source system
Inventor:
Hongwei Zeng
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jul 10, 2002
Inventor
Hongwei Zeng
Assignee (at issue)
Hongwei Zeng
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.