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发明名称
Drum tuning mechanism
摘要
申请公布号
US2729133(A)
申请公布日期
1956.01.03
申请号
US19540454989
申请日期
1954.09.09
申请人
LUDWIG WILLIAM F
发明人
LUDWIG WILLIAM F.
分类号
G10D13/04
主分类号
G10D13/04
代理机构
代理人
主权项
地址
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