Access control device with electronic identification and audio communication capability
US7274301B1 · kind B1 · utility
15Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1968
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An access control device including electronic identification device, the access control device characterized in that the access control device also includes an audio communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.