Granted Patent
Utility
US 5,828,799 · App. 08/954,431
Thermal optical switches for light
Inventor:
David K. Donald
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Oct 20, 1997
Inventor
David K. Donald
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.