METHOD OF AND APPARATUS FOR EXTRACTING BITUMEN,申请号USD3472553-传众专利搜索

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发明名称	METHOD OF AND APPARATUS FOR EXTRACTING BITUMEN
摘要
申请公布号	US3472553(A)	申请公布日期	1969.10.14
申请号	USD3472553	申请日期	1967.05.03
申请人	BRUNO H. MILLER	发明人	BRUNO H. MILLER
分类号	E21B10/32;E21B43/28;E21C41/24	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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