Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-07-20
2010-12-07
Le, Danh C (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S556100, C455S418000, C455S414100, C379S088010
Reexamination Certificate
active
07848775
ABSTRACT:
A cell phone is equipped to selectively send a prerecorded sound such as a telephone handset being slammed down on its cradle to a connected cell phone by an activation key, and thereafter disconnect the call.
REFERENCES:
patent: 6167278 (2000-12-01), Nilssen
patent: 6532371 (2003-03-01), Ezumi
patent: 7272419 (2007-09-01), Schutze et al.
Benefiel John R.
Le Danh C
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