A CPU heat sink fastener having a four-foot seat for mounting a heat sink inserted outside a fastening seat on a mother-board for installing a CPU is characterized that a base plate is disposed in the lower aspect of the mother-board opposite to the four-foot seat to be respectively screwed through four...http://www.google.de/patents/US6515860?utm_source=gb-gplus-sharePatent US6515860 - CPU heat sink fastener
