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Class Information
Number: 232/36
Name: Deposit and collection receptacles > Letter boxes > Signals > Sound > Door-controlled
Description: Alarms operated by movement of the box doors.

Patents under this class:

Patent Number Title Of Patent Date Issued
8474690 Alarm and indicating system for preventing burglary and theft Jul. 2, 2013
8297494 Alarm and indicating system for preventing burglary and theft Oct. 30, 2012
7506796 Mail delivery notification device Mar. 24, 2009
7398915 Security mailbox assembly, system methods and monitoring service Jul. 15, 2008
7222779 Security mail box assembly May. 29, 2007
7123147 Electronic mailbox with electronically programmed access door to remove mail, with separate mail delivery slot configured to prevent access to mail box, and with auxiliary backup power system Oct. 17, 2006
6987452 iBOX with home delivery auto-receipt system Jan. 17, 2006
6694580 Mail alert Feb. 24, 2004
6028517 Status indicating system for indicating the deposit and withdrawal of items in a receptacle Feb. 22, 2000
5917411 Electronic mailbox with keypad alarm system Jun. 29, 1999
5898371 Box with detecting means Apr. 27, 1999
5664728 Mail box signal device Sep. 9, 1997
5440294 Mail delivery signal system Aug. 8, 1995
5255843 Mailbox alert apparatus Oct. 26, 1993
5239305 Mailbox deposit indicator system Aug. 24, 1993
4372482 Installation for signalling deposit of mail in a letter box Feb. 8, 1983
4204632 Mail depository indicating assembly May. 27, 1980
4154393 Security mailbox May. 15, 1979
4113170 Rural mailbox delivery signal Sep. 12, 1978
3935994 Security mailbox Feb. 3, 1976

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