Granted Patent
Utility
US 5,136,439 · App. 07/415,053
Sectored servo position demodulator system
Inventors:
Gerald L. Weispfenning, Lloyd C. Goss
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Sep 29, 1989
Inventors
Gerald L. Weispfenning
Lloyd C. Goss
Assignee (at issue)
Seagate Technology LLC
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.