Granted Patent
Utility
US 5,488,624 · App. 08/195,790
Rare earth ion upconversion laser system
Inventors:
Robert J. Thrash, Leo F. Johnson
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Feb 8, 1994
Inventors
Robert J. Thrash
Leo F. Johnson
Assignee (at issue)
Amoco Corporation
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.