Title:
水路等に設ける逆流防止装置
Document Type and Number:
Japanese Patent JP4385175
Kind Code:
B2
Inventors:
Ken Okamoto
Application Number:
JP37737999A
Publication Date:
December 16, 2009
Filing Date:
December 29, 1999
Export Citation:
Assignee:
Ken Okamoto
International Classes:
E02B7/50
Domestic Patent References:
| JP63138012A | ||||
| JP11208580A |