Apparatus for cooling pipe insides,申请号US19390260666-传众专利搜索

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发明名称	Apparatus for cooling pipe insides
摘要
申请公布号	US2259367(A)	申请公布日期	1941.10.14
申请号	US19390260666	申请日期	1939.03.08
申请人	NATIONAL TUBE COMPANY	发明人	ELY PAUL C.;HOPKINS JOHN M.
分类号	B23K5/22	主分类号	B23K5/22
代理机构		代理人
主权项
地址

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