专利名称：DUCT FLANGE
发明人：RUNYAN, RANDY,TOBEN, JOHN 申请号：US2007023633
原来是梦
自制烧卖申请日：20071109
莫衷一是是什么意思公开号：WO2008060458A3
公开日：
参考文献格式字体
少妇吧20080821快餐店如何营销
专利内容由知识产权出版社提供
摘要：A flange for ductwork is integrally formed at a distal end of a duct surface. A first flange portion is formed perpendicularly outward from the duct surface. A cond flange portion is bent at a right angle from the first flange portion and substantially parallel to the duct surface. A third flange portion is bent back to be in substantial touching relationship with the cond flange portion and towards the first flange portion.
A fourth flange portion is bent at a right angle from the third flange portion to be in substantial touching relationship with the first flange portion. Finally, a fifth flange portion is bent at a right angle from the fourth flange portion to be in substantial touching relationship with the duct surface.蜗牛是怎样爬行的
申请人：FORMTEK, INC.
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