Granted Patent
Utility
US 4,477,906 · App. 06/370,174
Method and apparatus for population inversion
Inventor:
William E. Case
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Apr 20, 1982
Inventor
William E. Case
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.