发明授权
- 专利标题: DT cut, contour mode piezoelectric crystal
- 专利标题(中): DT切割,轮廓模式压电晶体
-
申请号: US516440申请日: 1974-10-21
-
公开(公告)号: US3979614A公开(公告)日: 1976-09-07
- 发明人: Satoshi Toyoda
- 申请人: Satoshi Toyoda
- 申请人地址: JA Tokyo
- 专利权人: Kinsekisha Laboratory, Ltd.
- 当前专利权人: Kinsekisha Laboratory, Ltd.
- 当前专利权人地址: JA Tokyo
- 优先权: JA48-119582 19731024
- 主分类号: H03H9/19
- IPC分类号: H03H9/19 ; H01L41/04
摘要:
In a crystal element of the type wherein a DT-cut crystal element is used to generate vibrations of the contour mode, one side of the crystal element is flat and the thickness of the element is gradually decreased from the center toward the periphery thereof.
公开/授权文献
- US5634863A Drop box with angled input shaft 公开/授权日:1997-06-03
信息查询
IPC分类: