Problem Statement:

Alert when Mail Box gets Mail

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Detail:

Post box alarm is a device to sound an alarm as soon as something is dropped in a letterbox placed far away at the main gate of a large farm or housing premises. It has a light-spring-loaded flap fixed at the bottom of the letterbox. When the postman drops the day's mail, the flap is deflected and this is made to give out a pulse-alarm in the household. The alarm may be a short-duration hoot or light flash. Emptying the letterbox automatically resets the device.

Knowledge Provider / Innovator: Swetha B Selvi
Address: D/o.B V Krishna Reddy,, H.No.3-10-227, Reddy colony, Hanamkonda,
City: Warangal
State: Andhra Pradesh
PIN Code 506011

Link: Alarm System, Reminder , Notification
Manufacturing Capacity: Yes
News Link 5:

• USPTO (United States Patent and Trademark Office,
  no:
• 6433684) (filed Dec. 21, 2000 and granted in Aug. 2002) which is very similar.