Assignee

OUBAO SECURITY TECH CO LTD

CN·1 granted patent·0 citations·filing 2016–2016

Technology mixE05C1 E05F1 E05Y1

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0116US10641020B2Electromagnetic release door closerOUBAO SECURITY TECH CO LTD·Filed 2016·Granted May 5, 2020·0 cites·17 claims

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