A device for assembling circuit boards. The device has an upper surface for receiving a compressing force. The device also has a lower surface for compressing a number of compression devices in a land grid array assembly while allowing access to a number of fasteners associated with the compression devices....http://www.google.de/patents/US7171742?utm_source=gb-gplus-sharePatent US7171742 - Method and system for assembling a printed circuit board using a land grid array
