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ESSYSTEM CO, Ltd
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Jecheon-si, KR
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Patents Grants
last 30 patents
Information
Patent Grant
Variable sliding manhole safety guard
Patent number
12,054,907
Issue date
Aug 6, 2024
ESSYSTEM Co., Ltd
Tae Hyun Jang
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Patents Applications
last 30 patents
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Patent Application
VARIABLE SLIDING MANHOLE SAFETY GUARD
Publication number
20230340751
Publication date
Oct 26, 2023
ESSYSTEM CO, Ltd
Tae Hyun JANG
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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