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发明名称
Guided plow hitch
摘要
申请公布号
US2139212(A)
申请公布日期
1938.12.06
申请号
US19380207521
申请日期
1938.05.12
申请人
TONJES JR HENRY
发明人
JR. HENRY TONJES,
分类号
A01B59/042
主分类号
A01B59/042
代理机构
代理人
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地址
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