Shanghai Xiangzhang Electronics Co., Ltd.

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Songjiang, Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Multilevel read-only optical disk and method for producing the same
- Patent number 7,680,024
- Issue date Mar 16, 2010
- Shanghai Xiangzhang Electronics Co., Ltd.
- Duanyi Xu
- G11 - INFORMATION STORAGE