METHOD OF FIGHTING AGAINST USTINESS OF AIR IN DOG HEADINGS,申请号PL19800228276-传众专利搜索

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发明名称	METHOD OF FIGHTING AGAINST USTINESS OF AIR IN DOG HEADINGS
摘要
申请公布号	PL133466(B1)	申请公布日期	1985.06.29
申请号	PL19800228276	申请日期	1980.12.03
申请人		发明人
分类号	E21C35/22;E21F;E21F5/04;(IPC1-7):E21F5/04	主分类号	E21C35/22
代理机构		代理人
主权项
地址

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