Title:
A packing integral-type nonreturn valve and a return water prevention method using this
Document Type and Number:
Japanese Patent JP6139935
Kind Code:
B2
Inventors:
Hiroyuki Kanai
Akira Kaneko
Akira Kaneko
Application Number:
JP2013067807A
Publication Date:
May 31, 2017
Filing Date:
March 28, 2013
Export Citation:
Assignee:
Maesawa Supply Industry Co., Ltd.
International Classes:
F16K15/06
Domestic Patent References:
| JP10103581A | ||||
| JP5215260A | ||||
| JP2012057323A | ||||
| JP3176509U | ||||
| JP54099123U |
Attorney, Agent or Firm:
Kokichi Ishikawa