A contact pattern for an integrated circuit package. The package has a plurality of contacts that are soldered to corresponding pads of a printed circuit board. The contacts are arranged into a plurality of cell units. Each cell unit has a row of center contacts diagonally located between two rows...http://www.google.de/patents/US5691569?utm_source=gb-gplus-sharePatent US5691569 - Integrated circuit package that has a plurality of staggered pins
