Apparatus for conveying metal strip
作者： John C Moroco , Robert F Renkin , Moroco Philip
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lens.org 参考文章(3)
John F Ferm, Apparatus for handling metal strip ,(1941)
Donald H. Washburn, Strip looping device ,(1944)
William Black, Frank Herbert Mowbray, Multicolor-printing machine. ,(1902)