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发明名称
Drumhead construction
摘要
申请公布号
US2979981(A)
申请公布日期
1961.04.18
申请号
US19600044929
申请日期
1960.07.25
申请人
LUDWIG DRUM CO.
发明人
LUDWIG WILLIAM FREDRICH
分类号
G10D13/02
主分类号
G10D13/02
代理机构
代理人
主权项
地址
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