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经营范围
发明名称
Hydraulic hammer
摘要
申请公布号
US3237406(A)
申请公布日期
1966.03.01
申请号
US19620243435
申请日期
1962.12.10
申请人
RAYMOND INTERNATIONAL INC.
发明人
SPANNHAKE ERNST W.;GENDRON GEORGE J.
分类号
B21J7/24;E02D7/10;E21B1/26
主分类号
B21J7/24
代理机构
代理人
主权项
地址
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