Frame for mine roof support,申请号US19580774917-传众专利搜索

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发明名称	Frame for mine roof support
摘要
申请公布号	US3097727(A)	申请公布日期	1963.07.16
申请号	US19580774917	申请日期	1958.11.19
申请人	THEODOR JASPER KARL;VOM FELDE HANS WERNER	发明人	JASPER KARL THEODOR;FELDE HANS WERNER VOM
分类号	E21D11/20	主分类号	E21D11/20
代理机构		代理人
主权项
地址

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