Granted Patent
Utility
US 6,556,858 · App. 09/487,007
Diffuse infrared light imaging system
Inventor:
Herbert D. Zeman
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jan 19, 2000
Inventor
Herbert D. Zeman
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.