Prophylactic tube with differential wall thickness,申请号US19550494953-传众专利搜索

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发明名称	Prophylactic tube with differential wall thickness
摘要
申请公布号	US2816542(A)	申请公布日期	1957.12.17
申请号	US19550494953	申请日期	1955.03.17
申请人	FREEMAN RICHARD B	发明人	FREEMAN RICHARD B.
分类号	A61F6/04	主分类号	A61F6/04
代理机构		代理人
主权项
地址

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