(19)

(11)

EP 3 987 123 A1

(12)

(43) Date of publication: 27.04.2022 Bulletin 2022/17 (21) Application number: 20745331.7 (22) Date of filing: 22.06.2020

(51) International Patent Classification (IPC):  E04C 3/20(2006.01) E04C 5/06(2006.01) E04C 5/07(2006.01) (52) Cooperative Patent Classification (CPC): E04C 5/07; E04C 5/0618; E04C 3/20 (86) International application number: PCT/NL2020/050407 (87) International publication number: WO 2020/256559 (24.12.2020 Gazette 2020/52)

(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: 20.06.2019 NL 2023349 09.01.2020 NL 2024637 (71) Applicant: Engelman, Christopher Bernard Hendrik 5345 VG Oss (NL)	(72) Inventor: Engelman, Christopher Bernard Hendrik 5345 VG Oss (NL) (74) Representative: Verhees, Godefridus Josephus Maria  Brabants Octrooibureau B.V. De Pinckart 54 5674 CC Nuenen 5674 CC Nuenen (NL)