Aerator pump for shoes

作者: Arthur C Crawford

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参考文章(10)
Bernard W Oltrogge, Foot ventilating shoe ,(1949)
Brahm Harry, Air circulating insole ,(1947)
Sr Ormsby P Williams, Ventilating foot covering ,(1926)
Helwig Arthur Carl, Shoe ventilating device ,(1933)
Kiedish Anita, Miller Harold, Shoe insole with moisture absorbing agent ,(1949)
Clair Archile J Le, Air-conditioned shoe ,(1938)
Jackson John James, Improved Socks for Boots and Shoes. ,(1902)