RU1818007C
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Tree-warming device
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RU1824182C
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Thermos
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RU1789780C
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Hydraulic ram
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RU1815407C
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Gear for production of electric power and water
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RU1778487C
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Magnetic thermal tube
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RU1772543C
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Device for cold receiving
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RU1768880C
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Building heating system
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RU1791526C
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Device for making no-freezing zone in water area
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SU1759358A1
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Device for providing fish with air in water bodies covered with ice
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RU1832117C
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Device for depositing vapor into liquid phase
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RU1824486C
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Device for making a non-freeing lane in ice
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SU1741693A1
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Device for aeration of water in water basins
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SU1762891A1
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Thermos flask
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RU1788344C
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Underwater hydraulic ram
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SU1742525A1
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Hydraulic ram
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RU1788321C
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Bellows compressor
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SU1730414A1
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Device for closing door
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SU1719579A1
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Brick wall
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SU1751444A1
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Electrohydraulic ram
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SU1707436A1
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Air drier
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