A stacked printed circuit board memory module in which a plurality of daughter circuit boards can be stacked onto a primary circuit board. The primary board and each of the plurality of daughter boards have electronic memory ICs mounted on the respective surfaces. The primary board and each of the daughter...http://www.google.se/patents/US6418034?utm_source=gb-gplus-sharePatent US6418034 - Stacked printed circuit board memory module and method of augmenting memory therein
