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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 |
| 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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