Wireless entrance communication device
USD830871S1 · kind S1 · design
44Cited by
19References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Oct 16, 2033 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.