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经营范围
发明名称
MAGNETIC DRAFTING ELEMENT
摘要
申请公布号
US3481006(A)
申请公布日期
1969.12.02
申请号
USD3481006
申请日期
1968.04.15
申请人
MAREMONT CORP.
发明人
VIRGIL A. BURNHAM
分类号
D01H5/74;(IPC1-7):D01H5/52;D01H5/54;D01G31/00
主分类号
D01H5/74
代理机构
代理人
主权项
地址
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