Recall control means,申请号US19460697706-传众专利搜索

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发明名称	Recall control means
摘要
申请公布号	US2449176(A)	申请公布日期	1948.09.14
申请号	US19460697706	申请日期	1946.09.18
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	PASCOE FRANK T.;JEROME ARTHUR L.
分类号	B61L7/08	主分类号	B61L7/08
代理机构		代理人
主权项
地址

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