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发明名称
Grave digger
摘要
申请公布号
US2754977(A)
申请公布日期
1956.07.17
申请号
US19510253181
申请日期
1951.10.25
申请人
PRZYBYLSKI DANIEL F
发明人
PRZYBYLSKI DANIEL F.
分类号
E02F3/413;E02F3/42;E02F9/08;E02F9/12
主分类号
E02F3/413
代理机构
代理人
主权项
地址
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