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SU21296A1
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A device for burning oil in the furnaces of boilers or furnaces
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SU25863A1
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All-metal airship
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SU45174A1
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Propeller for the airship
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SU15171A1
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Atmospheric steam engine
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SU9541A1
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Pa lnik
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SU7720A1
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Coupling coupling with overload alarm device
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SU8143A1
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Adaptation to the galvanic cells for signaling the drying of the electrolyte
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SU8132A1
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Device to protect against intruders
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SU7663A1
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Device for strengthening antenna antennas
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SU7599A1
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Adaptation to phones to eliminate the effects of extraneous noise
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