Granted Patent
Utility
US 5,477,378 · App. 08/289,052
Multiple crystal non-linear frequency conversion apparatus
Inventor:
Bertram C. Johnson
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Aug 11, 1994
Inventor
Bertram C. Johnson
Assignee (at issue)
Spectra Physics Lasers, 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.