Novel anti-theft door buffering structure
The utility model discloses a novel security door buffer structure, relates to security door field, including door closer main part and piston rod, the outside of door closer main part is provided with the dustproof mechanism, the dustproof mechanism includes the fixed ring, the inside of fixed ring...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
17.10.2023
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Subjects | |
Online Access | Get full text |
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