Ranco Japan Ltd.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ranco Japan Ltd..The latest application filed is for "directional control valve for switching the mode of operation in a heat transfer system".
- Ranco Japan Ltd. - Tokyo JP
| Patent | Date |
|---|---|
| Directional control valve for switching the mode of operation in a heat transfer system Grant 5,690,144 - Takahashi November 25, 1 | 1997-11-25 |
| Four-way switching valve device Grant 4,966,194 - Nakatsukasa , et al. October 30, 1 | 1990-10-30 |
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