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发明名称
Sealing device
摘要
申请公布号
US1926107(A)
申请公布日期
1933.09.12
申请号
US19320599411
申请日期
1932.03.17
申请人
WALWORTH PATENTS INC.
发明人
MOREHEAD FRENCH H.
分类号
F16L23/16
主分类号
F16L23/16
代理机构
代理人
主权项
地址
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