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发明名称
Earthworking implement
摘要
申请公布号
US2597954(A)
申请公布日期
1952.05.27
申请号
US19490069555
申请日期
1949.01.06
申请人
SCHALLER FRED W
发明人
SCHALLER FRED W.
分类号
A01B1/12;A01D7/02
主分类号
A01B1/12
代理机构
代理人
主权项
地址
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