Inventor

BIERINGS GUST

SE2 patents

Patents

2 patents

US6656341B2Dec 2, 2003

Method of etching, as well as frame element, mask and prefabricated substrate element for use in such etching

OBDUCAT AB78 citations93

US7767074B2Aug 3, 2010

Method of etching copper on cards

OBDUCAT AB2 citations56