Multiple rotor head mounting for mining machine,申请号US19530369311-传众专利搜索

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发明名称	Multiple rotor head mounting for mining machine
摘要
申请公布号	US2761664(A)	申请公布日期	1956.09.04
申请号	US19530369311	申请日期	1953.07.21
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	BOWMAN SPENCER
分类号	E21C27/22	主分类号	E21C27/22
代理机构		代理人
主权项
地址

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