Granted Patent
Utility
US 6,556,370 · App. 09/509,276
Method of writing tracking servo signal pattern for magnetic disk device
Inventor:
Kenji Oki
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jun 8, 2000
Inventor
Kenji Oki
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.