Granted Patent
Utility
US 6,344,942 · App. 09/116,857
Method and apparatus for absolute track spacing determination for self-servowriting
Inventor:
Edward J. Yarmchuk
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Jul 16, 1998
Inventor
Edward J. Yarmchuk
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.