(19)
(11) EP 2 171 162 A1

(12)

(43) Date of publication:
07.04.2010 Bulletin 2010/14

(21) Application number: 08755370.7

(22) Date of filing: 13.05.2008
(51) International Patent Classification (IPC): 
E02D 29/02(2006.01)
B28B 7/00(2006.01)
(86) International application number:
PCT/US2008/063502
(87) International publication number:
WO 2009/002623 (31.12.2008 Gazette 2009/01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 26.06.2007 US 768664

(71) Applicant: Allan Block Corporation
Edina, Minnesota 55439 (US)

(72) Inventors:
  • BOTT, Timothy, A.
    Sunfish Lake, MN 55118 (US)
  • GRAVIER, Robert, A.
    Edina, MN 55435 (US)

(74) Representative: Beattie, Alex Thomas Stewart 
Forrester & Boehmert Pettenkoferstrasse 20-22
80366 München
80366 München (DE)

   


(54) CONCRETE BLOCKS WITH NON-GEOMETRIC FACE SURFACES