Granted Patent
Utility
US 5,164,863 · App. 07/752,100
Method for writing servo patterns to a disc of a hard disc drive
Inventor:
Donald W. Janz
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Aug 29, 1991
Inventor
Donald W. Janz
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.