Appeal No. 96-1774
Application No. 07822,207
The examiner says that it would have been obvious because
the artisan seeking to implement Johansson would have found it
necessary to implement an identification method in order to
distinguish different transponders in the system. Examiner’s
Answer at 3. We disagree. Johansson already distinguishes the
transponders in the system with the timing. The examiner offers
no reason why an artisan would modify Johansson’s system, which
already distinguishes different transponders according to
variable delays, by transmitting at the end of the delay
redundant data corresponding to the delay rather than
transmitting no data at all.
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