Rong-Juh Yang

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Perpetual cubic calendar
- Patent number 4,472,892
- Issue date Sep 25, 1984
- Rong J. Yang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Children conductive intelligence autosuggestion machine
- Patent number 4,403,966
- Issue date Sep 13, 1983
- Rong-Juh Yang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS