Door bell/answering system
US5570083A · kind A · utility
35Cited by
10References
7Claims
0Family size
Inventor
Key dates
| Filing date | May 2, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | May 2, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A door bell system presents a normal door bell alarm with an alternative speech record/playback assembly. Upon depression of the exterior button extending through an exterior housing adjacent a building entrance the system with either energize the door bell or urge the visitor to leave a recorded message for subsequent playback. The door bell and/or record modes are selected by the user by a switch located within an interior housing mounted adjacent a building entrance. The housings include the appropriate components and wiring to provide the door bell and record/playback functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.