Jae Y. Yoo

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Kyeongki, KR

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic door closer
- Patent number 4,847,946
- Issue date Jul 18, 1989
- Sam Kyong Hardware Co., Ltd.
- Sun O. Nam
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES