Land drainage system
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United States of America Patent
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-
Nov 3, 1987
Grant Date -
N/A
app pub date -
Apr 23, 1986
filing date -
Apr 24, 1985
priority date (Note) -
Expired
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Abstract
A land drainage system comprising sub-soil tubes (1) connected to a suction container (3) has the container evacuated by a dual function system comprising liquid pumping means (4) and air extracting means (6). A reservoir (5) can contain liquid to be passed into the soil (e.g. for irrigating the land).
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