(19)

(11)

EP 4 103 795 A1

(12)

(43) Date of publication: 21.12.2022 Bulletin 2022/51 (21) Application number: 21752955.1 (22) Date of filing: 11.02.2021

(51) International Patent Classification (IPC):  E04F 13/08(2006.01) B32B 15/18(2006.01) E04B 1/94(2006.01) (52) Cooperative Patent Classification (CPC): E04F 13/12; E04F 13/0866; E04F 13/0889; E04B 9/0478; E04B 9/0428; E04B 9/0435; E04B 9/0485 (86) International application number: PCT/AU2021/000014 (87) International publication number: WO 2021/159166 (19.08.2021 Gazette 2021/33)

(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: 11.02.2020 AU 2020900364 (71) Applicant: Lee, Walter Birsbane QLD 4001 (AU)	(72) Inventor: Lee, Walter Birsbane QLD 4001 (AU) (74) Representative: Plosca, Daniel  Ratza & Ratza Ratza Building 52-54 A.I. Cuza Blvd 011056 Bucharest 1 011056 Bucharest 1 (RO)