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发明名称
Phonograph
摘要
申请公布号
US1966654(A)
申请公布日期
1934.07.17
申请号
US19270196457
申请日期
1927.06.04
申请人
DICTAPHONE CORPORATION
发明人
STOWELL LEON C.
分类号
G11B25/02
主分类号
G11B25/02
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代理人
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