Granted Patent
Utility
US 4,814,847 · App. 07/139,379
Ingaas semiconductor structures
Inventor:
Nader Tabatabaie
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Dec 30, 1987
Inventor
Nader Tabatabaie
Assignee (at issue)
Bell Communications Research, 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.