Pulley guard and hanger,申请号US19280314420-传众专利搜索

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发明名称	Pulley guard and hanger
摘要
申请公布号	US1820322(A)	申请公布日期	1931.08.25
申请号	US19280314420	申请日期	1928.10.23
申请人	POLKOSNIK BERNARD L	发明人	POLKOSNIK BERNARD L.
分类号	D06F57/00	主分类号	D06F57/00
代理机构		代理人
主权项
地址

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