Mechanical shovel for narrow underground galleries,申请号US19500155631-传众专利搜索

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发明名称	Mechanical shovel for narrow underground galleries
摘要
申请公布号	US2646901(A)	申请公布日期	1953.07.28
申请号	US19500155631	申请日期	1950.04.13
申请人	SOCIETE PINGUELY	发明人	GARNIER PAUL
分类号	E02F3/348	主分类号	E02F3/348
代理机构		代理人
主权项
地址

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