Automatic door mat for automobiles
作者： James L Shuck
DOI:
关键词: Computer science
摘要:
lens.org 参考文章(4)
Hofacker Anton, Folding running board for road vehicles ,(1935)
Frank P Mcnulty, Scraping device for footwear ,(1928)
Gaetano Nigro, Bumper for automobiles ,(1927)
Samuel T Evans, Step for vehicles ,(1937)