Granted Patent
Utility
US 5,115,442 · App. 07/509,653
Top-emitting surface emitting laser structures
Inventors:
Yong Hyuk LEE, Benjamin Tell
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Apr 13, 1990
Inventors
Yong Hyuk LEE
Benjamin Tell
Assignee (at issue)
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.