Granted Patent
Utility
US 6,496,328 · App. 09/475,420
Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads
Inventor:
Matthew P. Dugas
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Dec 30, 1999
Inventor
Matthew P. Dugas
Assignee (at issue)
ADVANCED RESEARCH 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.