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摘要
申请公布号
US2939191(A)
申请公布日期
1960.06.07
申请号
US19560584025
申请日期
1956.05.10
申请人
EMSIG MANNFACTURING COMPANY
发明人
EMSIG SIDNEY
分类号
A44B1/22
主分类号
A44B1/22
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