Expansible beater wheel,申请号US19280271448-传众专利搜索

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发明名称	Expansible beater wheel
摘要
申请公布号	US1767686(A)	申请公布日期	1930.06.24
申请号	US19280271448	申请日期	1928.04.20
申请人	LITCHFIELD DEAN J	发明人	LITCHFIELD DEAN J.
分类号	A01C3/06	主分类号	A01C3/06
代理机构		代理人
主权项
地址

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