Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833726 | Helmet with two-way radio communication faculty | Katsuro Shinoda, Hiroyuki Katsukawa, Naoki Tanaka | 1989-05-23 |
| 4810836 | Optical fiber-containing insulators | Katsuro Shinoda, Kazumi Nakanishi, Noriyasu Oguri, Hiroshi Harada, Isao Nakajima | 1989-03-07 |