Nippon Tetrapod Co. Ltd.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nippon Tetrapod Co. Ltd..The latest application filed is for "sloping blocks and revetment structure using the same".
- Nippon Tetrapod Co. Ltd. - Tokyo JP
| Patent | Date |
|---|---|
| Sloping blocks and revetment structure using the same Grant 4,813,812 - Hasegawa , et al. March 21, 1 | 1989-03-21 |
| Wave dissipating wall Grant 3,995,434 - Kato , et al. December 7, 1 | 1976-12-07 |
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