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发明名称
Sprechmaschine.
摘要
申请公布号
CH138926(A)
申请公布日期
1930.03.31
申请号
CHD138926
申请日期
1929.04.19
申请人
WILLIAMS,ALFRED CHARLES
发明人
CHARLES WILLIAMS,ALFRED
分类号
G11B3/00
主分类号
G11B3/00
代理机构
代理人
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地址
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