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发明名称
Draft unit
摘要
申请公布号
US2355893(A)
申请公布日期
1944.08.15
申请号
US19430508115
申请日期
1943.10.29
申请人
R. G. LE TOURNEAU, INC.
发明人
TOURNEAU ROBERT G. LE
分类号
E02F3/64
主分类号
E02F3/64
代理机构
代理人
主权项
地址
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