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发明名称
Self return trip cleaner for trenching machines
摘要
申请公布号
US3049816(A)
申请公布日期
1962.08.21
申请号
US19580781513
申请日期
1958.12.19
申请人
SPEICHER BROTHERS, INC.
发明人
SHIMP NATHAN B.
分类号
E02F3/24;E02F5/08
主分类号
E02F3/24
代理机构
代理人
主权项
地址
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