Mechanical shoe cleaner door mat
作者： Raymond R Darby
DOI:
关键词: Engineering 、 Automotive engineering
摘要:
lens.org 参考文章(6)
Leoland T Outlaw, Automatic electric shoe sole cleaner ,(1962)
Elwyn M Fresh, Elwyn T Fresh, Mechanical door mat ,(1962)
William W Karro, Vacuum-cleaner for shoes ,(1919)
Raymond H Ryzenga, Mechanical floor mat ,(1952)
Clarence R Aben, Reciprocating brush device for cleaning soles of shoes ,(1944)
Leadingham Willis, Automatic shoe wiper ,(1951)