RU1783592C
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Heat relay
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RU1793941C
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Equipment for cleaning water
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RU1782480C
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Aerosol irrigation installation
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SU1749365A1
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Fish protection structure
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SU1752214A2
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Steering control unit
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SU1747121A1
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Water clarifying apparatus
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RU1834675C
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Flooded polytier water intake-clarifier
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SU1772315A1
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Method for collection and disposal of oil products from groundwater surface
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SU1752861A1
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Amelioration system
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SU1761197A1
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Lamellar thickener
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SU1709007A1
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Fish protecting structure
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SU1732869A1
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Sprinkler installation
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SU1741668A1
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Water intake of sprinkling machine
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SU1724824A1
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Impulse washer for trash racks of submerged water intakes
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SU1761196A1
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Lamellar thickener
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SU1733581A1
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Water supply system
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SU1725958A1
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Settling tank for cleaning water
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SU1685486A1
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Shallow settler
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SU1687503A1
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Closure for opening in ship's bottom
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RU1813838C
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Process of purification of underground water from oil products
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