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发明名称
Pitman connection
摘要
申请公布号
US1797087(A)
申请公布日期
1931.03.17
申请号
US19290405239
申请日期
1929.11.06
申请人
HOVER CHARLES F
发明人
HOVER CHARLES F.
分类号
A01D34/33
主分类号
A01D34/33
代理机构
代理人
主权项
地址
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