There was an error regarding the number and title of the patent given in the article in CPI 4-2012 entitled ‘Takeover of patent for concrete block making machine with har- monic vibration by mould excitation’. The correct patent number is EP 1 590 140 and the patent title is ‘Device for moulding mix- tures’.
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Hess Group Freier-Grund-Straße 123, 57299 Burbach-Wahlbach, Germany T +49 2736 49760 F +49 2736 497620 info@hessgroup.com, www.hessgroup.com