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经营范围
发明名称
Echelle des sons avec réglette mobile
摘要
申请公布号
FR1517880(A)
申请公布日期
1968.03.22
申请号
FR4100500
申请日期
1967.01.18
申请人
发明人
RAVENEL BERNARD
分类号
G10G1/02
主分类号
G10G1/02
代理机构
代理人
主权项
地址
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