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发明名称
RAILROAD AIR VALVE
摘要
申请公布号
CA534275(A)
申请公布日期
1956.12.11
申请号
CAD534275
申请日期
申请人
CRERAR ADAMS AND CO.
发明人
KARL A. KLINGER;WILLIAM O. MARTIN
分类号
主分类号
代理机构
代理人
主权项
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