Granted Patent
Utility
US 6,728,051 · App. 10/388,466
Recording equalizer and magnetic recording/reproducing apparatus using the equalizer
Inventors:
Masukazu Igarashi, Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Mar 17, 2003
Inventors
Masukazu Igarashi
Yohji Maruyama
Kazuetsu Yoshida
Ikuo Saitoh
Assignee (at issue)
HITACHI, LTD.
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.