Granted Patent
Utility
US 4,392,988 · App. 06/262,230
Method of producing stable alumina
Inventors:
Jesse C. Dobson, Richard Knight
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: May 11, 1981
Inventors
Jesse C. Dobson
Richard Knight
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.