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发明名称
Sound reproducer
摘要
申请公布号
US1795936(A)
申请公布日期
1931.03.10
申请号
US19260134781
申请日期
1926.09.11
申请人
GENERAL TALKING PICTURES CORPORATION
发明人
FOREST LEE DE
分类号
H04R1/02
主分类号
H04R1/02
代理机构
代理人
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地址
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