An interactive graphical front end system for use in trading securities provides a GUI display where buy and sell orders at specific prices for any selected security at any instant in time are displayed, and where the data is displayed for more than one market trading participant. The graphical front...http://www.google.de/patents/US20030004853?utm_source=gb-gplus-sharePatent US20030004853 - Graphical front end system for real time security trading