Pneumatic soil pipe calker,申请号US19520323893-传众专利搜索

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发明名称	Pneumatic soil pipe calker
摘要
申请公布号	US2820379(A)	申请公布日期	1958.01.21
申请号	US19520323893	申请日期	1952.12.03
申请人	NAPIERSKIE GLENN P	发明人	NAPIERSKIE GLENN P.
分类号	F16L13/12	主分类号	F16L13/12
代理机构		代理人
主权项
地址

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