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发明名称
Improvements in or relating to implements for carrying out digging operations
摘要
申请公布号
GB622293(A)
申请公布日期
1949.04.29
申请号
GB19460032702
申请日期
1946.11.04
申请人
CHARLES JOHN RICE
发明人
分类号
A01B1/02;E02F3/413
主分类号
A01B1/02
代理机构
代理人
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