Snowplow,申请号US19290363792-传众专利搜索

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发明名称	Snowplow
摘要
申请公布号	US1781578(A)	申请公布日期	1930.11.11
申请号	US19290363792	申请日期	1929.05.17
申请人	BENJAMIN HALL JAY	发明人	HALL JAY BENJAMIN
分类号	E01H5/09	主分类号	E01H5/09
代理机构		代理人
主权项
地址

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