Granted Patent
Utility
US 5,231,461 · App. 07/805,244
Solar monochromator for filter calibration
Inventors:
Peter R. Silvergate, Edward F. Zalewski
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Dec 9, 1991
Inventors
Peter R. Silvergate
Edward F. Zalewski
Assignee (at issue)
Hughes Danbury Optical 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.