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Liao; Huei-Ling
Taipei, TW
No. of patents:

Patent Number Title Of Patent Date Issued
8117715 Structure of caster February 21, 2012
A caster includes a base carrying a rotation shaft and forming a pivotal joint seat. Wheels are rotatably mounted to the rotation shaft. Each wheel has an inside surface that is recessed to form an inner rim. A brake arm has a first end rotatably coupled to the pivotal joint seat and

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