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发明名称
Sealing device
摘要
申请公布号
US2453274(A)
申请公布日期
1948.11.09
申请号
US19460697793
申请日期
1946.09.18
申请人
SEROWY JOHN J
发明人
SEROWY JOHN J.
分类号
B44D3/12
主分类号
B44D3/12
代理机构
代理人
主权项
地址
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