Annunciator system
US5835014A · kind A · utility
3Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | May 15, 1995 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | May 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S70/49
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Protection of manual override lock and key systems for an electronic security system is provided by an annunciator system which is activated when access to a manual override keyhole is attempted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.