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发明名称
Frictional holding means
摘要
申请公布号
US2413414(A)
申请公布日期
1946.12.31
申请号
US19440517255
申请日期
1944.01.06
申请人
OBERMAIER JOHN A
发明人
OBERMAIER JOHN A.
分类号
G01R1/02
主分类号
G01R1/02
代理机构
代理人
主权项
地址
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