Variable batching device for conveyer-borne folded paper products
作者： Quakenbush James G , Stegenga Jerry A , Bleckner Jr Edward , Tesch Richard L
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lens.org 参考文章(2)
Edwin W Seeger, Audier Mark, Counting and grouping device ,(1945)
Leo O Donahue, Roy E Behrens, Method and apparatus for conveying, stacking and counting papers ,(1963)