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发明名称
Drop hammer
摘要
申请公布号
US1956885(A)
申请公布日期
1934.05.01
申请号
US19300503971
申请日期
1930.12.22
申请人
THE VLCHEK TOOL COMPANY
发明人
VLCHEK FRANK J.
分类号
B21J7/36
主分类号
B21J7/36
代理机构
代理人
主权项
地址
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