Title:
地下水位低下装置
Document Type and Number:
Japanese Patent JP5178635
Kind Code:
B2
Inventors:
Hiroshi Fujita
Application Number:
JP2009134922A
Publication Date:
April 10, 2013
Filing Date:
June 04, 2009
Export Citation:
Assignee:
Izumi Pump Manufacturing Co., Ltd.
International Classes:
E02D3/10; E02D19/10; E21B43/00; E21B43/08
Domestic Patent References:
| JP2007100401A | ||||
| JP57183595A | ||||
| JP2000073998A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama