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发明名称
Power hammer construction
摘要
申请公布号
US1990479(A)
申请公布日期
1935.02.12
申请号
US19320595024
申请日期
1932.02.25
申请人
PNEUMATIC DROP HAMMER COMPANY
发明人
FITZGERALD REGINALD P.
分类号
B21J7/24
主分类号
B21J7/24
代理机构
代理人
主权项
地址
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