Jointed rubber-covered mask,申请号US19410393358-传众专利搜索

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发明名称	Jointed rubber-covered mask
摘要
申请公布号	US2348335(A)	申请公布日期	1944.05.09
申请号	US19410393358	申请日期	1941.05.14
申请人	JAS. H. MATTHEWS & COMPANY	发明人	ESCHER JOSEPH M.
分类号	B44C1/22;C03C19/00	主分类号	B44C1/22
代理机构		代理人
主权项
地址

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