TREA

Tsung-Yuan Chang

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  • Changhua City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hollow castor for suitcase
    • Patent number 9,630,450
    • Issue date Apr 25, 2017
    • Tsung-Yuan Chang
    • B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents