Granted Patent
Utility
US 5,289,720 · App. 07/915,443
Optic sensor for determining environmental conditions
Inventors:
Devlin M. Gualtieri, Herman VandeVaart, Stephen M. Emo, Janpu Hou
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Jul 17, 1992
Inventors
Devlin M. Gualtieri
Herman VandeVaart
Stephen M. Emo
Janpu Hou
Assignee (at issue)
AlliedSignal, 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.