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经营范围
发明名称
Improvements in or relating to talking machines
摘要
申请公布号
GB345205(A)
申请公布日期
1931.03.09
申请号
GB19290037619
申请日期
1929.12.07
申请人
THOMAS DE LA RUE & COMPANY LIMITED;HENRY CHARLES PARKER;LUDWIG GUTSCHON
发明人
分类号
G10K13/00
主分类号
G10K13/00
代理机构
代理人
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