Title:
Back flow prevention device
Document Type and Number:
Japanese Patent JP6078721
Kind Code:
B2
Inventors:
Kazuya Hara
Application Number:
JP2012043498A
Publication Date:
February 15, 2017
Filing Date:
February 29, 2012
Export Citation:
Assignee:
Maruichi Co., Ltd.
International Classes:
E03C1/22; E03C1/298
Domestic Patent References:
| JP2005042478A | ||||
| JP2001200565A | ||||
| JP47013270Y1 | ||||
| JP2003206560A |
Foreign References:
| WO2001006065A1 |