Apparatus for forming fibrous annular members,申请号US19540469253-传众专利搜索

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发明名称	Apparatus for forming fibrous annular members
摘要
申请公布号	US2773434(A)	申请公布日期	1956.12.11
申请号	US19540469253	申请日期	1954.11.16
申请人	MINE SAFETY APPLIANCES COMPANY	发明人	BUB ROBERT A.
分类号	D21J7/00	主分类号	D21J7/00
代理机构		代理人
主权项
地址

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