Method of making weather strips

作者: Spraragen Louis

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摘要: This invention relates to the method of making an improved beading or sealing strip a type particularly adapted for exterior seals closure members. application is division my copending application, Serial No. 435,782, filed March 23, 1942, now Patent 2,400,470 granted...

参考文章(3)
Joseph I Taylor, Method of making channel strips ,(1928)