Patents by Inventor Robert B. Andrew

Robert B. Andrew has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mailbox operated signal device
    Patent number: 6831558
    Abstract: A mailbox operated signal device has a motion detector that is attached to the inside of a conventional mailbox and activates a light and a speaker to alert residents that the mail has been delivered to their mailbox. A wireless transmitter is electrically connected to the motion detector. The wireless transmitter is capable of transmitting a motion detected signal. A wireless receiver is capable of receiving the transmitted motion detected signal. A light is electrically connected to the wireless receiver. The light is for indicating when the motion detected signal is received by the wireless receiver.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: December 14, 2004
    Inventor: Robert B. Andrew