Original document(29 pages) Authorized document(31 pages) 中文版
    This invention is an underwater sand-shifting ship driven by a mechanically poling propulsion unit. A mouldboard, whose raising up and lowering down and inclination are controllable, is arranged at the front of its bow.
Application Number
申请号		 88101947 Application Date
申请日		 1988.04.05
Title 名称 Underwater sand-shifting ship
Publication Number
公开号		 1036425 Publication Date
公开日		 1989.10.18
Approval Pub. Date Granted Pub. Date 1995.04.05
International Classification 分类号 E02F5/28
Applicant(s) Name
申请人		 Kaneto Tajima
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 LI YI
More information 更  多  信  息


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