(19)
(11) EP 4 555 158 A1

(12)

(43) Date of publication:
21.05.2025 Bulletin 2025/21

(21) Application number: 23748856.4

(22) Date of filing: 13.07.2023
(51) International Patent Classification (IPC): 
E04F 11/028(2006.01)
E04F 11/104(2006.01)
E04F 11/035(2006.01)
(52) Cooperative Patent Classification (CPC):
E04F 11/035; E04F 11/1041
(86) International application number:
PCT/NL2023/050378
(87) International publication number:
WO 2024/014954 (18.01.2024 Gazette 2024/03)
(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:
KH MA MD TN

(30) Priority: 15.07.2022 NL 2032502
22.11.2022 NL 2033590

(71) Applicants:
  • Verberne, Gijs
    1241 LN Kortenhoef (NL)
  • Willemsen, Johannes Cornelis
    3921 EB Elst (NL)

(72) Inventor:
  • VAN DRIEL, Johannes Peter
    1112 ZB Diemen (NL)

(74) Representative: de Hoog, Johannes Hendrik 
Octrooibureau de Hoog Gouverneurslaan 18 A
3905 HE Veenendaal
3905 HE Veenendaal (NL)

   


(54) A MODULAR STAIRCASE