Nihon Valqua Kogyo Kabushiki Kaisha
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nihon Valqua Kogyo Kabushiki Kaisha.The latest application filed is for "packing for use in steel-pipe hydraulic testing apparatus".
- Nihon Valqua Kogyo Kabushiki Kaisha - Tokyo JP
| Patent | Date |
|---|---|
| Packing for use in steel-pipe hydraulic testing apparatus Grant 4,149,731 - Yoshida , et al. April 17, 1 | 1979-04-17 |
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