Tractor mounted side boom crane
作者： Gerald H Nichols
DOI:
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摘要:
lens.org 参考文章(5)
Harland W. Cardwell, Side boom and winch attachment for tractors ,(1937)
Vyrl E Cadwell, Quick attachable and detachable loader ,(1955)
Vander M Dobeus, John W Carlson, Side boom attachment for tractors ,(1951)
Harrison Jolly Kibler, Tractor mounted hydraulic loader ,(1952)
Perley P Lord, Attachment for tractors ,(1945)