Granted Patent
Utility
US 4,949,358 · App. 07/185,864
Ring laser with improved beam quality
Inventors:
Joseph W. Kantorski, Klaus Hachfeld, James L. Hobart
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Apr 25, 1988
Inventors
Joseph W. Kantorski
Klaus Hachfeld
James L. Hobart
Assignee (at issue)
Coherent, 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.