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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal display element
- Patent number 4,381,886
- Issue date May 3, 1983
- Hitachi, Ltd.
- Hisao Yokokura
- G02 - OPTICS
Information Patent Grant
Liquid crystal display element
- Patent number 4,252,414
- Issue date Feb 24, 1981
- Hitachi, Ltd.
- Kiyoshige Kinugawa
- G02 - OPTICS