Boat trailer with push-off device
作者： Thomas L Faul , Jr Harry A Leeder
DOI:
关键词: Push off 、 Engineering 、 Marine engineering 、 Trailer
摘要:
lens.org 参考文章(3)
Rral L Anderson, Combination boat and utility trailer ,(1957)
Fred E Ahlbin, Boat trailer unloader ,(1960)
Frank J Witte, Mechanism for ejecting articles from elevators ,(1949)