Jang Hyuk Ahn

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Osan, KR

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Patents Grantslast 30 patents

Information Patent Grant
Tip for a grinding wheel
- Patent number D563440
- Issue date Mar 4, 2008
- Ehwa Diamond Industrial Co., Ltd.
- Jang Hyuk Ahn
- D15 - Machines not elsewhere specified
Information Patent Grant
Tip for a grinding wheel
- Patent number D563186
- Issue date Mar 4, 2008
- Ehwa Diamond Industrial Co., Ltd.
- Jang Hyuk Ahn
- D08 - Tools and hardware
Information Patent Grant
Grinding wheel shank
- Patent number D559649
- Issue date Jan 15, 2008
- Ehwa Diamond Industrial Co., Ltd.
- Jang Hyuk Ahn
- D08 - Tools and hardware
Information Patent Grant
Grinding wheel shank
- Patent number D554671
- Issue date Nov 6, 2007
- Ehwa Diamond Industrial Co., Ltd.
- Jang Hyuk Ahn
- D15 - Machines not elsewhere specified