Title:
浚渫土砂の水面落下防止装置
Document Type and Number:
Japanese Patent JP4971516
Kind Code:
B1
Inventors:
Shoji Igawa
Application Number:
JP2011184183A
Publication Date:
July 11, 2012
Filing Date:
August 25, 2011
Export Citation:
Assignee:
Wakamatsu Port Industry Co., Ltd.
International Classes:
B63B27/30; B63B35/28; E02F3/47; E02F7/00
Domestic Patent References:
| JP2001278185A | 2001-10-10 | |||
| JP2009161911A | 2009-07-23 | |||
| JPS5438705Y2 | 1979-11-16 | |||
| JPS529759Y2 | 1977-03-01 | |||
| JPS63117697U | 1988-07-29 |
Attorney, Agent or Firm:
Koji Fuchigami