Granted Patent
Utility
US 5,621,749 · App. 08/524,058
Praseodymium-doped fluoride fiber upconversion laser for the generation of blue light
Inventor:
Douglas M. Baney
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Sep 6, 1995
Inventor
Douglas M. Baney
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.