发明授权
US4228742A Railway car integral hopper structure 失效
铁路车整体料斗结构

Railway car integral hopper structure
摘要:
A vehicle hopper construction having longitudinally spaced hopper end slope sheets and hopper cross ridge slope sheets formed prior to assembly in the vehicle hopper so as to provide integral interior hopper corner plates with associated transversely spaced hopper side sheets.
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