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经营范围
发明名称
Perfectionnement aux résonateurs piézo-électriques ou autres
摘要
申请公布号
FR787629(A)
申请公布日期
1935.09.26
申请号
FRD787629
申请日期
1934.06.22
申请人
发明人
GUERBILSKY
分类号
H03H3/02
主分类号
H03H3/02
代理机构
代理人
主权项
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