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)
| 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)
| 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 |