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BG60319A
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Catalyst for ethylene polymerization and method for its preparation
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BG41298A1
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Device for coordinating of link between telex terminals and telegraphic station
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BG41297A1
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Device for commutating of telegraphic channels
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BG39662A1
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Catalytic system for dimerisation of low olefines
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BG35019A1
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Digital modem
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BG31890A1
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Chamber for sector dyeing of moving yarn
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BG31439A1
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Multicanal analog- digital double integrating transducer
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BG30601A1
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Sorce of high constant tension
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BG30582A1
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Device for four- electrode conductometry
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BG28819A1
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Step generator of indicating function
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BG24734A1
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Thread movement monitoring device
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BG23482A1
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Salts of 2- phenyl- 3- furil- 2- propene acid
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BG23318A1
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Derivatives of 2-phenyl-3-furil-2-propene acid and method for their obtaining
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