Granted Patent
Utility
US 5,880,915 · App. 08/731,816
Crack resistant magnetic write head
Inventors:
Edward Hinpong Lee, Peter Beverley Powell Phipps
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Oct 21, 1996
Inventors
Edward Hinpong Lee
Peter Beverley Powell Phipps
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.