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RU1778136C
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Method for preparing coal charge to coking
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RU1835121C
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Method for control of dc-ac-multistep voltage converter
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Device for charging reservoir capacitors
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Ac/dc convertor
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Roof-bolting yielding support
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RU1790476C
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Blank pack for making bimetallic sheets
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RU1791951C
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Reversible electric drive
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Method for carrying out mining operations in coal seams
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Device for out-board starting of internal combustion engine
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Method for protective mine working while developing very deep mineral deposits
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Roll
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Inertial crusher
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System for control of generation of three-component gas mixture
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Cone crusher
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Cone inertial crusher
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Method of sealing end of rope
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Disk mill
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Sheet material waste breaking device
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Mill for grinding material
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RU1808372C
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Centrifugal breaker
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