Granted Patent
Utility
US 6,549,355 · App. 10/231,089
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 15, 2003
Filed: Aug 30, 2002
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.