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发明名称
Mechanical sound reproducing device
摘要
申请公布号
US2837340(A)
申请公布日期
1958.06.03
申请号
US19520280867
申请日期
1952.04.07
申请人
GOLDA A. DUNCAN;THEODORE ROGER DUNCAN;ALAN C. DUNCAN
发明人
DUNCAN THEODORE R.
分类号
G10K13/00
主分类号
G10K13/00
代理机构
代理人
主权项
地址
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