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SU122451A1
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Gateway for washing gold-bearing sands and ores
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SU42763A1
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Closed loop heat engine
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SU43614A1
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self-dumping tank device for intermittent supply of water or other liquid
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SU123092A2
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Apparatus for extracting gold from schlich, pulp and other waste drazhnyh and hydraulic works
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SU35850A1
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Power installation
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SU34862A1
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Closed-loop fuel engine
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SU33006A1
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Water-holding self-acting shutter
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SU30851A1
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Heat meter
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SU30736A1
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The method of serial production of connected in series of segments of conductors of metals for thermopiles
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SU42011A1
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The method of developing gold placers
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SU26150A1
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Solar steam boiler
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SU26992A1
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The device of gateways for the hydraulic development of gold
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SU25820A1
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Method of connecting water pipes
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SU24775A1
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Self-acting vertical-rotary closure for culverts of hydraulic structures
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SU30328A1
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Thermoelectric battery
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SU13228A1
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Thermoelectric battery
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