Method and apparatus for making indefinite length flexible conduit

作者: Marcus A Hall

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参考文章(5)
John C Shutt, George L Meyers, John E Schriner, Method and machine for making flexible tubing ,(1947)
Angelo J. Speziale, 2-alkoxy-4-hydroxy-hexahydronaphthalenes ,(1955)
Stanley R Carson, Russel L Monbeck, Charles H Beare, Method of making flexible air hose ,(1951)