Granted Patent
Utility
US 4,897,847 · App. 07/103,009
Mirror translation apparatus for altering focal point position in a laser
Inventor:
Stephen C. Wolgast
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Sep 30, 1987
Inventor
Stephen C. Wolgast
Assignee (at issue)
Spectra-Physics, 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.