LAYING STRUCTURE OF ECOLOGICAL SIDE DITCH WITH OSMOTIC SLIT
PROBLEM TO BE SOLVED: To provide the laying structure of a side ditch in which a side ditch body is made shorter in height than a conventional side ditch to avoid the contact of the side ditch body with a drain connection pipe connected to a main drainpipe buried underground in a side ditch laying s...
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Main Author | |
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Format | Patent |
Language | English |
Published |
08.01.2009
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Subjects | |
Online Access | Get full text |
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