序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
1 Pneumatic control system for a trolley dispatch network US34850673 1973-04-06 US3834315A 1974-09-10 WARNER K
A trolley dispatch network in which a penumatic control system is provided to switch trolley carriers from the main rail to various spurs connected to receiving stations.
QQ群二维码
意见反馈