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Tso-Yu Fan
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Changhua, TW
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last 30 patents
Information
Patent Grant
Central-controlled double wheel structure
Patent number
9,139,043
Issue date
Sep 22, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Caster
Patent number
D736608
Issue date
Aug 18, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
D08 - Tools and hardware
Information
Patent Grant
Caster
Patent number
D735022
Issue date
Jul 28, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
D08 - Tools and hardware
Information
Patent Grant
Caster
Patent number
D733541
Issue date
Jul 7, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
D08 - Tools and hardware
Information
Patent Grant
Caster
Patent number
D729051
Issue date
May 12, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
D08 - Tools and hardware
Information
Patent Grant
Caster
Patent number
D728354
Issue date
May 5, 2015
Der Sheng Co. Ltd.
Tso-Yu Fan
D08 - Tools and hardware
Information
Patent Grant
Castor having adjustable braking function
Patent number
8,365,354
Issue date
Feb 5, 2013
Der Sheng Co., Ltd.
Tso-Yu Fan
B60 - VEHICLES IN GENERAL