Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent
1978-08-14
1980-01-08
Corbin, David H.
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
239542, E02B 1300
Patent
active
041825837
ABSTRACT:
This invention relates generally to underground irrigation systems and more specifically to the specific equipment required by such systems in the form of pipes, covers, valves and the like. This invention provides a means by which existing conventional surface sprinkling systems may be easily converted to the underground variety and a simplified inexpensive construction of an underground irrigation system.
REFERENCES:
patent: 953080 (1910-03-01), Wiggins
patent: 1747500 (1930-02-01), Butler
patent: 2366522 (1945-01-01), Gutman
patent: 3874598 (1975-04-01), Havens
patent: 3896999 (1975-07-01), Barragan
patent: 3901448 (1975-08-01), Babin
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