Granted Patent
Utility
US 4,912,883 · App. 07/310,410
Lapping control system for magnetic transducers
Inventors:
Mike Chang, Mark A. Church, Michael Paul Salo
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Feb 13, 1989
Inventors
Mike Chang
Mark A. Church
Michael Paul Salo
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.