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经营范围
发明名称
Wired music system
摘要
申请公布号
US2312680(A)
申请公布日期
1943.03.02
申请号
US19410374165
申请日期
1941.01.13
申请人
STONE JR LAWRENCE
发明人
JR. LAWRENCE STONE,
分类号
H04H20/82
主分类号
H04H20/82
代理机构
代理人
主权项
地址
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