Hsing-Ching Liu

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Taipei, CT

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Patents Grantslast 30 patents

Information Patent Grant
Musical shoe
- Patent number 4,043,241
- Issue date Aug 23, 1977
- Hsing-Ching Liu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Educational toy
- Patent number 4,033,051
- Issue date Jul 5, 1977
- Hsing-Ching Liu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Novel educational toy
- Patent number 4,027,402
- Issue date Jun 7, 1977
- Hsing-Ching Liu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Educational toy
- Patent number 4,024,650
- Issue date May 24, 1977
- Hsing-Ching Liu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Educational quiz and answer toy
- Patent number 4,012,849
- Issue date Mar 22, 1977
- Hsing-Ching Liu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Educational toy clock with action
- Patent number 3,994,078
- Issue date Nov 30, 1976
- Hsing-Ching Liu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS