Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404315 | Molding compositions and diaphragms, arm pipes and head shells molded therefrom | Tsunehiro Tsukagoshi, Shinichi Yokozseki, Sumio Hagiwara, Toshikazu Yoshino, Yasuyuki Arai +1 more | 1983-09-13 |