Granted Patent
Utility
US 4,894,742 · App. 06/915,299
Thin-film laminated magnetic heads of Fe-Si-Al alloy
Inventors:
Kazuhiro Saito, Taiichi Mori
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Oct 3, 1986
Inventors
Kazuhiro Saito
Taiichi Mori
Assignee (at issue)
Nippon Mining Company Limited
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.