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发明名称
Tightness device
摘要
申请公布号
US1929733(A)
申请公布日期
1933.10.10
申请号
US19310567033
申请日期
1931.10.05
申请人
VICTOR AUTIER
发明人
AUTIER VICTOR
分类号
F16J9/00;F16J15/16
主分类号
F16J9/00
代理机构
代理人
主权项
地址
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