Granted Patent
Utility
US 5,742,449 · App. 07/689,671
Near contact magnetic recording using a liquid lubricant bearing to separate media and transducer
Inventors:
Thomas A. Gregory, Christopher Guild Keller, Thomas S. Larson
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Apr 23, 1991
Inventors
Thomas A. Gregory
Christopher Guild Keller
Thomas S. Larson
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.