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(11)

EP 3 899 168 A1

(12)

(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19897550.0 (22) Date of filing: 20.12.2019

(51) International Patent Classification (IPC):  E04G 23/02(2006.01) (52) Cooperative Patent Classification (CPC): E04G 23/0207; E04G 23/0214 (86) International application number: PCT/AU2019/051421 (87) International publication number: WO 2020/124162 (25.06.2020 Gazette 2020/26)

(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: 22.12.2018 US 201862784437 P (71) Applicant: Manumba Pty Ltd Red Hill QLD 4059 (AU)	(72) Inventors: HEWITT, Gavin Douglas Cooroy 4563 Queensland (AU) ROBINSON, Sam Richard Noosa Heads 4567 Queensland (AU) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)