Apparatus for rifling gun barrels,申请号US19270208313-传众专利搜索

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发明名称	Apparatus for rifling gun barrels
摘要
申请公布号	US1789308(A)	申请公布日期	1931.01.20
申请号	US19270208313	申请日期	1927.07.25
申请人	HATCHER JAMES L	发明人	HATCHER JAMES L.
分类号	B23D5/02	主分类号	B23D5/02
代理机构		代理人
主权项
地址

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