Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7178761 | Container apparatus for object to be dropped | Shigeru Wada, Shigeki Akamatsu | 2007-02-20 |
| 6814638 | Airdrop type buoy apparatus | Shigeru Wada, Shigeki Akamatsu | 2004-11-09 |