Granted Patent
Utility
US 4,396,591 · App. 06/379,363
Recovery of hydrogen iodide
Inventor:
John H. Norman
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: May 18, 1982
Inventor
John H. Norman
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.