Crystal for a telephone watch

Telecommunications – Transmitter and receiver at same station – Having particular housing or support of a transceiver

Reexamination Certificate

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Details

C368S026000, C368S294000, C368S296000

Reexamination Certificate

active

09767722

ABSTRACT:
The telephone watch includes a crystal (1) including a keyboard (2) formed in particular of a plurality of capacitive sensors (3) disposed under the crystal. This crystal includes a thick zone (4) at its center and a thinned zone (5) at its periphery. The keyboard (2) is deposited under the thinned zone (5).

REFERENCES:
patent: 4055755 (1977-10-01), Nakamura et al.
patent: 4064688 (1977-12-01), Sasaki et al.
patent: 4247929 (1981-01-01), Sasaki et al.
patent: 4257115 (1981-03-01), Hatuse et al.
patent: 5008548 (1991-04-01), Gat
patent: 5500835 (1996-03-01), Born
patent: 5508978 (1996-04-01), Kalbermatter et al.
patent: 5812498 (1998-09-01), Teres
patent: 5883861 (1999-03-01), Moser et al.
patent: 6052339 (2000-04-01), Frenkel et al.
patent: 6456569 (2002-09-01), Stauffer
patent: 6463011 (2002-10-01), Christen et al.
patent: 6535461 (2003-03-01), Karhu
patent: 295 19 714 (1996-03-01), None
patent: 2315709 (1998-11-01), None

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