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HIZEN CO., LTD
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Daejeon, KR
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Patents Grants
last 30 patents
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Patent Grant
System for protecting underground utilities and preventing damages
Patent number
8,587,428
Issue date
Nov 19, 2013
Hizen Co., Ltd.
Myeong Sik Lee
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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last 30 patents
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Patent Application
SMART VEHICLE CHECKING SYSTEM FOR COUNTERTERRORISM
Publication number
20160343251
Publication date
Nov 24, 2016
HIZEN CO., LTD
Myeiong-Sik LEE
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES