Latch operating device for power shovels,申请号US19300463074-传众专利搜索

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发明名称	Latch operating device for power shovels
摘要
申请公布号	US1891529(A)	申请公布日期	1932.12.20
申请号	US19300463074	申请日期	1930.06.23
申请人	FRYE ROBERT G	发明人	FRYE ROBERT G.
分类号	B66D1/80;B66D5/10	主分类号	B66D1/80
代理机构		代理人
主权项
地址

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