Jyh-Jeng Deng

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Taipei Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for inscribing braille characters on a sheet of paper
- Patent number 5,803,741
- Issue date Sep 8, 1998
- Jyh-Jeng Deng
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS