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Class Information
Number: 200/61.63
Name: Electricity: circuit makers and breakers > Special application > Actuated concurrently with operation or use of art device > Closure, closure operator or accessory > Letter slot or box
Description: Devices in which the closure member or closure operator is associated with a mail slot or receptacle.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7843340 |
Mail delivery alert system |
Nov. 30, 2010 |
| 7506796 |
Mail delivery notification device |
Mar. 24, 2009 |
| 7187285 |
System to detect mail in a mailbox |
Mar. 6, 2007 |
| 6831558 |
Mailbox operated signal device |
Dec. 14, 2004 |
| 6657142 |
Power switch apparatus |
Dec. 2, 2003 |
| 5898371 |
Box with detecting means |
Apr. 27, 1999 |
| 5664728 |
Mail box signal device |
Sep. 9, 1997 |
| 5440294 |
Mail delivery signal system |
Aug. 8, 1995 |
| 5382945 |
Mail slot alarm |
Jan. 17, 1995 |
| 5023595 |
Mail arrival signal system |
Jun. 11, 1991 |
| 4872210 |
Curbside mailbox signal |
Oct. 3, 1989 |
| 4651135 |
Mail detector |
Mar. 17, 1987 |
| 4287514 |
Mailbox announcer |
Sep. 1, 1981 |
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