Traction drive mechanism for worm drive shovels,申请号US19280311619-传众专利搜索

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发明名称	Traction drive mechanism for worm drive shovels
摘要
申请公布号	US1883874(A)	申请公布日期	1932.10.25
申请号	US19280311619	申请日期	1928.10.10
申请人	KOEHRING COMPANY	发明人	BREY HAROLD E.
分类号	B66C23/78	主分类号	B66C23/78
代理机构		代理人
主权项
地址

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