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发明名称
VALVE ALARM SIGNAL SYSTEM
摘要
申请公布号
CA438945(A)
申请公布日期
1946.12.31
申请号
CAD438945
申请日期
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
WILLIAM C. LUDI;EUGENE M. FRY, JR.
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