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经营范围
发明名称
Stroboscopic apparatus for phonographs
摘要
申请公布号
US2407996(A)
申请公布日期
1946.09.24
申请号
US19450576630
申请日期
1945.02.07
申请人
NIES WILLIAM L
发明人
NIES WILLIAM L.
分类号
G11B23/42
主分类号
G11B23/42
代理机构
代理人
主权项
地址
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