Collapsible ski pole
作者： J Hyman
DOI:
关键词:
摘要: A collapsible ski pole comprising a plurality of interconnected tubular members held together by flexible cord under tension, and means for releasing the tension on to permit sections be disconnected one from other arranged in compact bundle.
lens.org 参考文章(3)
Charles H Robertson, Collapsible cane and crutch construction ,(1970)
Harold W Langlais, Collapsible rod, post, or stick ,(1949)
James H Blair, Rod for cleaning rifles and the like. ,(1908)