WO2018177447A1
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Concrete, a dry mixture for the preparation of this concrete, and a method for the preparation of this concrete
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CZ2018141A3
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Concrete, a dry mix for preparing concrete, and a method for preparing this concrete
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CZ171593A3
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Safety lock pin-tumbler
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CZ128292A3
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Safety locking mechanism
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CZ112992A3
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Safety device of doors
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CS38184A1
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Movable tilting working platform for window cleaning in school buildings
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CS234224B1
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Irrigation nozzle
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CS231204B1
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Method of separation of pure vinylchloride
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CS215972B1
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Method of making the shaped fibre particularly synthetic from the melt and wet spinning nozzle for execution of the said method
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CS192283B1
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Appliance for boring,turning and extruding the holes notably the microholes
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