Duplex coating machine

作者: George W Heiseler

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参考文章(6)
Obenshain Noel, Wright M Welton, Method of and apparatus for coating paper ,(1936)
William Gorges, Frank B Davidson, Paper-coating machine. ,(1906)
John B Haberle, Julius B B Stryker, Glue-spreading machine. ,(1911)