Granted Patent
Utility
US 6,304,402 · App. 09/637,498
Equalizer and magnetically recorded-signal reproducer
Inventors:
Yasutaka Nishida, Seiichi Mita, Naoki Satoh, Yoshiju Watanabe
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Aug 11, 2000
Inventors
Yasutaka Nishida
Seiichi Mita
Naoki Satoh
Yoshiju Watanabe
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.