Granted Patent
Utility
US 4,439,404 · App. 06/096,442
Separation of uranium isotopes
Inventor:
John T. Porter, II
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Nov 21, 1979
Inventor
John T. Porter, II
Assignee (at issue)
GA Technologies, Inc.
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.