Granted Patent
Utility
US 4,872,744 · App. 07/144,817
Single quantum well optical modulator
Inventors:
Joseph H. Abeles, Alexander Kastalsky, Robert F. Leheny
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Jan 15, 1988
Inventors
Joseph H. Abeles
Alexander Kastalsky
Robert F. Leheny
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.