Granted Patent
Utility
US 4,662,707 · App. 06/781,094
Lighthouse structure and compensating lens in reference laser beam projecting apparatus
Inventors:
Ted L. Teach, Mark D. Sobottke
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Sep 27, 1985
Inventors
Ted L. Teach
Mark D. Sobottke
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.