Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-07-10
2007-07-10
Shriver, J. Allen (Department: 3618)
Communications: electrical
Condition responsive indicating system
Specific condition
C280S033992
Reexamination Certificate
active
11209501
ABSTRACT:
The present invention teaches and discloses method and apparatus for alerting a grocery store check out cashier of merchandise placed on the bottom tray of a typical grocery shopping cart. A passive RFID transponder is incorporated into the structure of the cart which when interrogated by an associated reader, located at the cashier's check out station, responds with a signal verifying the presence, or absence, of an unseen item upon the carts bottom tray.
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Transponder News “Is it Possible to Scan a Supermarket Trolley Using RFIP?” by Mike Marsh May 13, 2005 http://rapidtp.com/transponder/trolposs.
Konstad Rolf A.
Lawrence Jeffery W.
Evolution Robotics Retail, Inc.
Shriver J. Allen
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