(19)

(11)

EP 3 969 668 A1

(12)

(43) Date of publication: 23.03.2022 Bulletin 2022/12 (21) Application number: 19804829.0 (22) Date of filing: 02.10.2019

(51) International Patent Classification (IPC):  E02B 11/00(2006.01) (52) Cooperative Patent Classification (CPC): E02B 11/00 (86) International application number: PCT/IB2019/058376 (87) International publication number: WO 2020/229887 (19.11.2020 Gazette 2020/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 15.05.2019 LT 2019514 (71) Applicant: UAB EKODRENA 08412 Vilnius (LT)	(72) Inventor: MARINAS, Andrius 08412 Vilnius (LT) (74) Representative: Zaboliene, Reda  Metida Business center Vertas Gyneju str. 16 01109 Vilnius 01109 Vilnius (LT)