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发明名称
VALVE MECHANISM
摘要
申请公布号
CA298335(A)
申请公布日期
1930.03.18
申请号
CAD298335
申请日期
申请人
JOHN C. CROWLEY
发明人
JOHN C. CROWLEY
分类号
主分类号
代理机构
代理人
主权项
地址
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