RU1782681C
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Device for cleaning piping inner surface
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SU1650281A1
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Device for cleaning piping cavities from sediments
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SU1562410A2
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Ejector earth intake device for underwater working of ground
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SU1557269A1
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Ejector earth intake device
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SU1447994A1
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Ejector-type soil-intake arrangement for underwater working of soil
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SU1118439A1
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Arrangement for cleaning pipelines
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SU1105565A1
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Apparatus for cleaning the bottom of canals and pipelines of land-reclamation systems
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SU1093754A1
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Arrangement for removing floating liquids off water surface
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SU1024553A1
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Derbis and fish guard for water intake structure
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SU1122551A1
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Device for emergency air supply to diver helmet
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SU909034A1
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Device for working soil under water
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SU932085A1
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Plug for pipelines
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SU891834A1
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Fish-protecting arrangement of water intake suction chamber
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SU804779A1
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Soil-suction hydraulic nozzle
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SU899777A1
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Driver's hydraulic shaft
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SU894085A1
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Ejector-type soil intake
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SU1048033A1
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Fish arrester of water intake structure
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SU861491A1
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Diver's hydraulic tube
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SU658025A1
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Diver's water nozzle
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