Granted Patent
Utility
US 5,100,231 · App. 07/344,980
Apparatus for measuring the mode quality of a laser beam
Inventors:
Michael W. Sasnett, Thomas F. Johnston, Jr.
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Apr 27, 1989
Inventors
Michael W. Sasnett
Thomas F. Johnston, Jr.
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.