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LV14199A
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Discs for immersible bio-filters
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LV14200A
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Filing material for filters of purification buildings
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LV14102A
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Filtering element for wastewater purification plants' filtration dams
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LV14098A
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Filtering element for non-reagent purification of liquid to be filtered
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LV13912A
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Floor design element
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LV13795B
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Filtering element for oil and petrol containing drain treatment
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LV13707B
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Sound-insulating element with open pores
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LV13235B
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Filtering element for natural and sewage water purification
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LV13145B
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Method for production of composite building materials using as a filler sewage sludge and water filter sediment
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LV12205A
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Production of building elements
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LV12357A
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Treatment method of waste water by reagents for local sewers
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LV12344A
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Filtering elements for development of sewers on the basis of cellulose containing plant materials
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LV12113A
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Building element of outer wall being heat insulating and load carrying
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