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Jeong-Saeng Ahn
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Kyungki-do, KR
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Patents Grants
last 30 patents
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Patent Grant
Segments for building spliced prestressed concrete girder and metho...
Patent number
8,806,820
Issue date
Aug 19, 2014
Interconstec Co., Ltd.
Jeong-Saeng Ahn
B28 - WORKING CEMENT, CLAY, OR STONE
Patents Applications
last 30 patents
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Patent Application
Segments for building spliced prestressed concrete grider and metho...
Publication number
20090064610
Publication date
Mar 12, 2009
INTERCONSTEC CO., LTD.
Jeong-Saeng Ahn
B28 - WORKING CEMENT, CLAY, OR STONE