No.64933 "Filtering elements"
No.40908 "Filtering elements"
No. 53972 "Filter nozzle"
No.53221 "Filtering nozzle"
No. 2229920 "Filter for cleaning liquids"
No. 23787 "Filter nozzle"
No.30618 "Drainage and distribution assembly for granular-bed filter"
No. 30617 "Filter for cleaning liquids"
Certificate for Trademark No. 166374
Certificate for Trademark No. 179083
Annex to the certificate for trademark No. 166374
Annex to the certificate for trademark No. 179083