发明名称 DUCT JOINTING DEVICES
摘要 Duct jointing devices comprising two separate legs (6A, 6B) adapted to be assembled together to form a rigid L-shaped corner piece for associating with hollow flanges (2) wherein the two leg bodies (6A, 6B) overlap to form a corner body.
申请公布号 WO9005263(A1) 申请公布日期 1990.05.17
申请号 WO1989GB01300 申请日期 1989.11.01
申请人 FIRMAC LIMITED 发明人 FIRTH, COLIN
分类号 F16L23/14 主分类号 F16L23/14
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