FLEXIBLE FIRE RESISTANT AIR DUCT,申请号USD3434502-传众专利搜索

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发明名称	FLEXIBLE FIRE RESISTANT AIR DUCT
摘要
申请公布号	US3434502(A)	申请公布日期	1969.03.25
申请号	USD3434502	申请日期	1967.05.22
申请人	CHARLES D. SNELLING	发明人	CHARLES D. SNELLING
分类号	F16L59/02;F16L59/14;(IPC1-7):F16L11/00;F16L11/14;D03D49/26	主分类号	F16L59/02
代理机构		代理人
主权项
地址

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