Nippon Hardboard Co. Ltd.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nippon Hardboard Co. Ltd..The latest application filed is for "gypsum moldings as building materials and methods manufacturing the said gypsum moldings".
- Nippon Hardboard Co. Ltd. - Nagoya JP
| Patent | Date |
|---|---|
| Gypsum moldings as building materials and methods manufacturing the said gypsum moldings Grant 4,239,716 - Ishida , et al. December 16, 1 | 1980-12-16 |
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