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Browse by Category: Main > Communications
Class Information
Number: 340/330
Name: Communications: electrical > Systems > In and out indicators (e.g., doorbell button flashes "out" sign)
Description: Subject matter for signaling whether a person is "in" or "out".










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8653984 Integration of LED lighting control with emergency notification systems Feb. 18, 2014
8619136 System and method for home monitoring using a set top box Dec. 31, 2013
8536991 Wireless decorative doorbell device Sep. 17, 2013
8269621 Mezuzah case Sep. 18, 2012
8183989 Emergency exit indicator and emergency exit indicating system May. 22, 2012
8154391 Door bell button mechanism Apr. 10, 2012
8149104 Room management system Apr. 3, 2012
8063791 Electronic apparatus and control method Nov. 22, 2011
7982627 Meter device, information processing device, and meter driving method Jul. 19, 2011
7898394 Systems and methods for community tagging Mar. 1, 2011
7768419 Mobile communication terminal Aug. 3, 2010
7750810 Identification method and system and device suitable for said method and system Jul. 6, 2010
7746223 System and method for receiving security content from wireless cameras Jun. 29, 2010
7619538 Programmable, directing evacuation systems: apparatus and method Nov. 17, 2009
7561027 Sensing device Jul. 14, 2009
7474214 Method and system for locating tires using RFID Jan. 6, 2009
7417535 Apparatus and method for converting a low voltage AC wiring circuit to a high speed data communications link Aug. 26, 2008
7365637 Reversible diode doorbell detection circuit Apr. 29, 2008
7365966 Electronic device Apr. 29, 2008
7336158 Status indicating doorbell Feb. 26, 2008
7253720 Programmable push button Aug. 7, 2007
7135959 Apparatus and method for wireless doorbell and security control panel interaction Nov. 14, 2006
7109860 Surveillance apparatus integrated with mobile phone Sep. 19, 2006
7049956 Method and apparatus for disabled access to polling places May. 23, 2006
6992591 Marker lights for wireless doorbell transmitters and other devices Jan. 31, 2006
6975213 Whistle with light emitting device Dec. 13, 2005
6965203 Method and circuit for repetitively firing a flash lamp or the like Nov. 15, 2005
6897765 Remote doorbell ringer May. 24, 2005
6870488 Driveway security sensor Mar. 22, 2005
6750760 Door chime assembly and method Jun. 15, 2004
6741163 Decorative motion detector May. 25, 2004
6731208 House intercom security system May. 4, 2004
6731200 System for indicating the status of a hotel or similar room May. 4, 2004
6606030 Pet wireless doorbell device and trainer Aug. 12, 2003
6587049 Occupant status monitor Jul. 1, 2003
6563431 Automatic garage door system and method May. 13, 2003
6486790 White-LED luminous signalling device Nov. 26, 2002
6445302 Pet wireless doorbell device Sep. 3, 2002
6359564 Occupancy status indicator Mar. 19, 2002
6249225 Auxiliary alert process and system thereof for alarm system Jun. 19, 2001
6215410 Rescue guilding system Apr. 10, 2001
6147608 Occupancy status indicator Nov. 14, 2000
5883570 Decorative door bell actuator Mar. 16, 1999
5774039 Programmable doorbell control Jun. 30, 1998
5774041 Designer chime cover Jun. 30, 1998
5757267 Battery-operated receiver for wireless audible indication system May. 26, 1998
5748081 Multi-functional anti-theft supervising assembly May. 5, 1998
5673016 Multifunction visitor information system Sep. 30, 1997
5638047 Sound activated transmitter Jun. 10, 1997
5629667 Direction indicator circuit May. 13, 1997

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