Granted Patent
Utility
US 6,809,812 · App. 09/877,773
Spectral analysis system with moving objective lens
Inventor:
Huiqu Yin
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Jun 8, 2001
Inventor
Huiqu Yin
Assignee (at issue)
SpectraCode, 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.