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经营范围
发明名称
Cutter ring blade
摘要
申请公布号
US2702437(A)
申请公布日期
1955.02.22
申请号
US19520305199
申请日期
1952.08.19
申请人
HYDRAULIC DREDGING COMPANY, LTD.
发明人
CUSHING PAUL J.
分类号
A01B13/12;E02F3/92
主分类号
A01B13/12
代理机构
代理人
主权项
地址
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