Granted Patent
Utility
US 4,564,757 · App. 06/430,284
Mirror position sensor for improved track selection in optical data disk system
Inventors:
Edward V. LaBudde, Jeffrey E. Niven, Der-Chang Hsieh, Roger C. Parker, Robert J. Johnson
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Sep 30, 1982
Inventors
Edward V. LaBudde
Jeffrey E. Niven
Der-Chang Hsieh
Roger C. Parker
Robert J. Johnson
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.