Granted Patent
Utility
US 4,860,296 · App. 07/053,498
Laser controlled by a multiple-layer heterostructure
Inventors:
Daniel S. Chemla, David A. B. Miller, Peter W. Smith
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: May 14, 1987
Inventors
Daniel S. Chemla
David A. B. Miller
Peter W. Smith
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.