Free piston power hammer,申请号US19350040505-传众专利搜索

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发明名称	Free piston power hammer
摘要
申请公布号	US2067886(A)	申请公布日期	1937.01.19
申请号	US19350040505	申请日期	1935.09.13
申请人	BYFORD ELECTRIC HAMMER CO., INC.	发明人	BYFORD HORACE
分类号	B25D11/06	主分类号	B25D11/06
代理机构		代理人
主权项
地址

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