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发明名称
IMPROVEMENTS IN OR RELATING TO DIAPHRAGMS
摘要
申请公布号
GB1267920(A)
申请公布日期
1972.03.22
申请号
GB19680038976
申请日期
1968.08.15
申请人
PIONEER OILSEALING & MOULDING COMPANY LIMITED
发明人
ROGER NOWELL
分类号
F16K7/12
主分类号
F16K7/12
代理机构
代理人
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地址
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