Granted Patent
Utility
US 4,621,353 · App. 06/416,770
Optical memory system providing improved focusing control and improved beam combining and separating apparatus
Inventors:
Robert L. Hazel, Gilbert Y. Chan
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Sep 9, 1982
Inventors
Robert L. Hazel
Gilbert Y. Chan
Assignee (at issue)
Burroughs, 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.