Title:
電子時計
Document Type and Number:
Japanese Patent JP7375579
Kind Code:
B2
Abstract:
An electronic watch includes an including a package in which an oscillator and a watch control integrated circuit are housed, a circuit board having an elastic function, the circuit board including a first face and a second face, a first member provided with a plurality of first protrusions, and a second member provided with a second protrusion facing the first protrusion with the circuit board interposed therebetween, in which a plurality of clamping positions are clamped between the first protrusion and the second protrusion, A1>P1>A2>0, where A1 is a length of the first protrusion, A2 is a length of the second protrusion, and P1 is a thickness of the oscillation device.
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| JPS55154489 | TEMPERATURE COMPENSATING METHOD OF CRYSTAL WATCH |
| WO/2006/050427 | WIRELESS SYNCHRONOUS TIME SYSTEM |
Inventors:
Nao Sato
Application Number:
JP2020011417A
Publication Date:
November 08, 2023
Filing Date:
January 28, 2020
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G04G3/00
Domestic Patent References:
| JP2009213061A | ||||
| JP57073991U | ||||
| JP2014037990A | ||||
| JP2014021117A | ||||
| JP54099068U | ||||
| JP2018033026A |
Attorney, Agent or Firm:
Satoshi Nakai
Hiroki Matsuoka
Masayuki Imamura
Hiroki Matsuoka
Masayuki Imamura