(19)

(11)

EP 4 798 922 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 25823568.8 (22) Date of filing: 10.12.2025

(51) International Patent Classification (IPC):  F41J 1/08(2006.01) (52) Cooperative Patent Classification (CPC): F41J 1/08 (86) International application number: PCT/FI2025/060140 (87) International publication number: WO 2026/125818 (18.06.2026 Gazette 2026/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH LA MA MD TN (30) Priority: 11.12.2024 FI 20246453 (71) Applicant: Dobbelgänger Oy 90620 Oulu (FI)	(72) Inventors: KOLOLUOMA, Terho 90620 Oulu (FI) TRTNIK, Ales 90620 Oulu (FI) KOSKITALO, Anssi 90620 Oulu (FI) LOIKKANEN, Joel 90620 Oulu (FI) (74) Representative: Laine IP Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)