Granted Patent
Utility
US 4,194,168 · App. 05/854,517
Unidirectional ring laser apparatus and method
Inventors:
Steven M. Jarrett, Michael Leitner
Patented Case
View Patent ↗
Granted: Mar 18, 1980
Filed: Nov 25, 1977
Inventors
Steven M. Jarrett
Michael Leitner
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.