Nishikawa; Yoshiyasu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nishikawa; Yoshiyasu.The latest application filed is for "single curvature fan wheel of a diagonal flow fan".
- Nishikawa; Yoshiyasu - Ono JP
| Patent | Date |
|---|---|
| Single curvature fan wheel of a diagonal flow fan Grant 4,362,468 - Nishikawa , et al. December 7, 1 | 1982-12-07 |
| Diagonal-flow fan wheel with blades of developable surface shape Grant 4,274,810 - Nishikawa June 23, 1 | 1981-06-23 |
| Single-curvature fan wheel of diagonal-flow fan Grant 4,227,868 - Nishikawa , et al. October 14, 1 | 1980-10-14 |
| Flat-bladed fan wheel of diagonal-flow fan Grant 4,218,190 - Nishikawa , et al. August 19, 1 | 1980-08-19 |
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