Granted Patent
Utility
US 5,774,298 · App. 08/599,534
Asynchronous digital PES demodulation disk drive servo control system
Inventors:
Wayne Leung Cheung, Chung Chuan Liu, Francis Edward Mueller
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Feb 6, 1996
Inventors
Wayne Leung Cheung
Chung Chuan Liu
Francis Edward Mueller
Assignee (at issue)
International Business Machines Corporation
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.