Kyu B. Hwang

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Daeku, KR

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Patents Grantslast 30 patents

Information Patent Grant
Set screw fixing device for spring hinge
- Patent number 5,048,155
- Issue date Sep 17, 1991
- Hyundae Precision Co., Ltd.
- Kyu B. Hwang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES