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发明名称
Sound photography system
摘要
申请公布号
US1822183(A)
申请公布日期
1931.09.08
申请号
US19280291547
申请日期
1928.07.10
申请人
WHITSON PHOTOPHONE CORPORATION
发明人
WHITSON DELMAR A.
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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地址
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