Granted Patent
Utility
US 5,164,953 · App. 07/604,614
Population inversion by excited energy level absorption
Inventors:
William E. Case, Mark E. Koch
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Oct 26, 1990
Inventors
William E. Case
Mark E. Koch
Assignee (at issue)
LTV Aerospace and Defense Company
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.