Audible safety signal for electrical apparatus,申请号US19290403087-传众专利搜索

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发明名称	Audible safety signal for electrical apparatus
摘要
申请公布号	US1944627(A)	申请公布日期	1934.01.23
申请号	US19290403087	申请日期	1929.10.28
申请人	THEODORE ANDERSON	发明人	ANDERSON THEODORE
分类号	D06F75/26	主分类号	D06F75/26
代理机构		代理人
主权项
地址

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