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CS218904B1
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Windov with three glasses
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CS218811B1
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Window with triple wings
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CS195030B1
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Method of extraction of the ferro-ferric concentrate from the fly ash
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CS188507B1
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Method of extracting the ferrous-ferric concentrate from the fly ash
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CS195848B1
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Agent for increasing earth bearing capacity
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CS179181B1
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Method for precision measuring of adjustable travel of machine-tool moving rests,specially for numerical system controlled mechines
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CS179182B1
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Rack gauge for accuracy measuring of carriage adjustable lifts by working machines,specially by mechine-tools
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CS184084B1
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Measuring device sensor gear unit,for ex. at indicator with size object deviation lever transmission
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CS206451B1
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Controllable aerating slit
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