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RU1783979C
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Device for cooking and keeping cooked food hot
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Device for drying
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Hermetic sealing control method for items operating in not sealed shells
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Controllable check leak
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Shf amplifier
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Pipeline for cryogenic liquids
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Transducer for checking articles with elastic shell for leak-proofness
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Centrifugal ejector
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Method of determining local leaking of hollow articles
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Bed for testing articles of arbitrary space configuration
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Vacuum system of leak detector
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Mass spectrometer leak detector
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Device for checking leak-proofness of articles
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Switching device
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Switching device
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Method of lining hearth and banks of metallurgical furnaces
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Tape for processing surface of magnetic head
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