Pneumatic ticket dispatch tube for telephone exchanges or the like,申请号US19320638760-传众专利搜索

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发明名称	Pneumatic ticket dispatch tube for telephone exchanges or the like
摘要
申请公布号	US1990913(A)	申请公布日期	1935.02.12
申请号	US19320638760	申请日期	1932.10.20
申请人	MALCOLM MCGREGOR JOHN ERNEST	发明人	MCGREGOR JOHN ERNEST MALCOLM
分类号	B65G51/02	主分类号	B65G51/02
代理机构		代理人
主权项
地址

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