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发明名称
VALVE SYSTEMS
摘要
申请公布号
CA870389(A)
申请公布日期
1971.05.11
申请号
CAD870389
申请日期
申请人
G. W. B. BOILERS LIMITED
发明人
ROBERT S. WILLIAMS
分类号
主分类号
代理机构
代理人
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地址
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