An arrangement for testing printed-circuit boards, in the case of a known arrangement, the adaptor device contains two sets of printed-circuit boards arranged side-by-side, which each have contacts on their narrow input-side in an interval, which corresponds to half of the standard contact spacing. Circuit-board...http://www.google.de/patents/US4939452?utm_source=gb-gplus-sharePatent US4939452 - Arrangement for testing printed-circuit boards
