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发明名称
Drop hammer
摘要
申请公布号
US3404847(A)
申请公布日期
1968.10.08
申请号
US19660571235
申请日期
1966.08.09
申请人
FORREST E. SMITH
发明人
SMITH FORREST E.
分类号
B25D17/02;B28D1/26
主分类号
B25D17/02
代理机构
代理人
主权项
地址
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