Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774615 | Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences | Susumu Yoshida, Shuichi Hashimoto, Ryuki Kubohara, Tatsuhiko Kosugi, Takeyori Hara | 2004-08-10 |