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发明名称
Butterfly valve with sealing ring movable mounted for accommodation to seat
摘要
申请公布号
US2888036(A)
申请公布日期
1959.05.26
申请号
US19540464868
申请日期
1954.10.26
申请人
FIRMA JOHANNES ERHARD
发明人
REPPERT KARL
分类号
F16K1/226
主分类号
F16K1/226
代理机构
代理人
主权项
地址
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