Granted Patent
Utility
US 4,560,925 · App. 06/428,929
Mirror position sensor and associated pivot suspension for improved track selection in optical data disk system
Inventors:
Jeffrey E. Niven, Der-Chang Hsieh
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Sep 30, 1982
Inventors
Jeffrey E. Niven
Der-Chang Hsieh
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.