Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833726 | Helmet with two-way radio communication faculty | Katsuro Shinoda, Toshiyuki Kawaguchi, Naoki Tanaka | 1989-05-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833726 | Helmet with two-way radio communication faculty | Katsuro Shinoda, Toshiyuki Kawaguchi, Naoki Tanaka | 1989-05-23 |