Granted Patent
Utility
US 4,902,102 · App. 07/173,796
Aspheric optical test plate assembly
Inventor:
Robert S. Breidenthal
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Mar 28, 1988
Inventor
Robert S. Breidenthal
Assignee (at issue)
Litton Systems, 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.