Title:
逆止弁
Document Type and Number:
Japanese Patent JP6475663
Kind Code:
B2
Inventors:
Wataru Nishihori
Yuichi Watanabe
Yuichi Watanabe
Application Number:
JP2016102248A
Publication Date:
February 27, 2019
Filing Date:
May 23, 2016
Export Citation:
Assignee:
Fukoku Oil Co., Ltd.
Manhole Shokai Co., Ltd.
Manhole Shokai Co., Ltd.
International Classes:
F16K31/22; E02D29/12; E03F7/04; H02G9/10
Domestic Patent References:
| JP2011066997A | ||||
| JP2010248775A | ||||
| JP2000291037A | ||||
| JP2000324669A |
Foreign References:
| US4296778 | ||||
| WO2015019426A1 |
Attorney, Agent or Firm:
Patent Business Corporation Tokyo Alpa Patent Office