Rotary rake and sickle for attachment for lawn mower

作者: Hugo F Feuerlein

DOI:

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参考文章(4)
Norman K Warner, Raking attachment for lawn mower ,(1953)
Gargiule Samuel, Taranta Frank, Rotary rake attachment ,(1940)
Rigbold J Vimtrup, Lawn mower attachment ,(1928)