Hirai; Hirotomo
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hirai; Hirotomo.The latest application filed is for "electronic display device".
- Hirai; Hirotomo - Tokyo JP
| Patent | Date |
|---|---|
| Electronic display device Grant 4,204,205 - Yagi , et al. May 20, 1 | 1980-05-20 |
| Liquid crystal display device Grant 4,017,155 - Yagi , et al. April 12, 1 | 1977-04-12 |
| Reflective plates for a liquid crystal display device Grant 3,984,176 - Hirai , et al. October 5, 1 | 1976-10-05 |
| Switching system for an electronic timepiece Grant 3,978,296 - Moriya , et al. August 31, 1 | 1976-08-31 |
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