Granted Patent
Utility
US 5,552,884 · App. 08/358,204
Calibration standard for flying height tester having a head mounted on a multilevel surface transparent disc
Inventors:
Yufeng Li, Peter R. Goglia
Patented Case
View Patent ↗
Granted: Sep 3, 1996
Filed: Dec 16, 1994
Inventors
Yufeng Li
Peter R. Goglia
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.