Drop hammers of the gravity type,申请号GB19500020317-传众专利搜索

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发明名称	Drop hammers of the gravity type
摘要
申请公布号	GB671886(A)	申请公布日期	1952.05.14
申请号	GB19500020317	申请日期	1950.08.16
申请人	CHAMBERSBURG ENGINEERING COMPANY	发明人
分类号	B21J7/44	主分类号	B21J7/44
代理机构		代理人
主权项
地址

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