Pipe tong support,申请号US19450583790-传众专利搜索

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发明名称	Pipe tong support
摘要
申请公布号	US2435972(A)	申请公布日期	1948.02.17
申请号	US19450583790	申请日期	1945.03.20
申请人	BYRON JACKSON CO.	发明人	LUNDEEN CHESTER A.
分类号	E21B19/16	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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