CN303996782S - - Google Patents

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Publication number
CN303996782S
CN303996782S CN303996782S CN 303996782 S CN303996782 S CN 303996782S CN 303996782 S CN303996782 S CN 303996782S
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11465878B2 (en) 2017-03-31 2022-10-11 Otis Elevator Company Visual status indicator for door and lock state

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11465878B2 (en) 2017-03-31 2022-10-11 Otis Elevator Company Visual status indicator for door and lock state

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