EP 0580003 A3 19940323 -
Publication
Application
Priority
DE 9209979 U 19920724
Abstract (en)
[origin: EP0580003A2] For monitoring a plurality of gates, a gate alarm device is proposed, which also monitors the time for which the gate is open. If predetermined values are exceeded, a corresponding alarm is produced in the central station. <IMAGE>
IPC 1-7
IPC 8 full level
G08B 13/08 (2006.01)
CPC (source: EP)
G08B 13/08 (2013.01)
Citation (search report)
- [Y] US 4278968 A 19810714 - ARNETT COLEMAN C, et al
- [Y] EP 0331654 A2 19890906 - EMMEPI LA SICUREZZA PROIBITA S [IT]
- [A] US 4920333 A 19900424 - BARR ROBERT [US], et al
- [A] DE 2910594 A1 19800918 - BEYER WOLFGANG
- [A] DE 3809752 A1 19891012 - ZIMMER KLAUS [DE], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 9209979 U1 19921112; EP 0580003 A2 19940126; EP 0580003 A3 19940323
DOCDB simple family (application)
DE 9209979 U 19920724; EP 93110672 A 19930705