DRAINAGE SYSTEM Russian patent published in 1994 - IPC

Abstract RU 2022099 C1

FIELD: melioration. SUBSTANCE: system has a siphon equipped with a non-return valve mounted from the inner side of the siphon bend in its highest point. The non-return valve creates a pulse movement of water in the system. EFFECT: preventive measures from painting the drainage with ocher. 1 dwg

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RU 2 022 099 C1

Authors

Ol'Garenko G.V.

Dates

1994-10-30—Published

1991-04-29—Filed