Granted Patent
Utility
US 6,791,485 · App. 10/095,166
Digital densitometer using light-to-frequency converter
Inventor:
Allen J. Rushing
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Mar 11, 2002
Inventor
Allen J. Rushing
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.