Appeal No. 2002-1318 Application No. 08/693,662 removed, we find that the received television broadcast signal was broadcast over the airways from the service provider's transmitter, which we consider to be an RF transmitter, and is not a data signal propagated from a first power line to a second power line, without the use of an RF transmitter on the first power line. In addition, we note that all of the claims under appeal require sensing of data signals propagated from the first power line without the use of an RF transmitter on the first power line. For the reasons above, this limitation is not suggested by the applied prior art. In that regard, while Dockery does teach that a power line used in a communications system may also be used as an aerial antenna, as advanced by the examiner (answer, page 4), the transmitted signal over the power line that generates the RF signal propagated to a range of 200 feet from the power line is an RF transmitted signal. Therefore, Dockery does not teach or suggest that the data signal is propagated from the first power line and sensed by the receiver without the use of an RF transmitter. In addition, even if we are incorrect our interpretation of Dockery, and assuming, arguendo, that Dockery teaches the sensing of a signal propagated from the first power line without the use of an RF transmitter, we find that because 10Page: Previous 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 NextLast modified: November 3, 2007