Granted Patent
Utility
US 5,296,721 · App. 07/923,397
Strained interband resonant tunneling negative resistance diode
Inventors:
Joel N. Schulman, David H. Chow
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Jul 31, 1992
Inventors
Joel N. Schulman
David H. Chow
Assignee (at issue)
Hughes Aircraft 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.