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BG100818A
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Electron locking system
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BG99318A
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Method and installation for continuous cleaning of tubular heat-exchangers
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BG98155A
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Batcher
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BG97618A
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Method for filters fabrication
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BG42246A1
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Building material composition
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BG37822A1
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Storage battery cell sodium- sulphur
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BG37510A1
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Bearing assembly of vertical electric machine
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BG39674A1
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Method for scraping of passage openings
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BG32150A1
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Apparatus for catching pressing and arranging of articles
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BG30819A1
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Locking cylinder
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BG30820A1
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Device for centring and fixing
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BG24922A1
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A sodium electrode with a ion-conducting beta-alumina membrane
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BG29023A1
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Knifecarrier
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BG33948A1
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A method of obtaining hydroxonitrates of aluminium
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BG28129A1
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Coagulant for purieying of wdustrial wasie waters from metals lead, zink, copper and chromium
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