A keyboard frame assembly mounting hardware includes a base frame having a plurality of female fastening device at the top, a plurality of oblong guide holes and a locating hole spaced along the longitudinal center line thereof, each female fastening device having a bridge strip bridged over a square...http://www.google.co.uk/patents/US5428502?utm_source=gb-gplus-sharePatent US5428502 - Keyboard frame assembly mounting hardware having hooks, bridge strips, and locating stub rods
