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发明名称	ICE BREAKING APPARATUS AND METHOD
摘要
申请公布号	CA643461(A)	申请公布日期	1962.06.26
申请号	CAD643461	申请日期
申请人	WALTON W. CUSHMAN	发明人	WALTON W. CUSHMAN
分类号		主分类号
代理机构		代理人
主权项
地址

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