Combined lawn mower and edger
作者： Luther R Norton , Katzen Harry
DOI:
关键词: Agricultural engineering 、 Engineering 、 Lawn mower
摘要:
lens.org 参考文章(2)
Richard E Harshman, Combination grass cutter and edge trimmer ,(1947)
Ralph O Hutchens, Lawn trimming and edging apparatus ,(1949)