Granted Patent
Utility
US 4,674,076 · App. 06/641,355
Optical memory system having improved positioning and focusing control circuitry
Inventors:
Der-Chang Hsieh, Edward V. LaBudde
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Aug 15, 1984
Inventors
Der-Chang Hsieh
Edward V. LaBudde
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.