An automatic Engineering Change Order (ECO) methodology to effectively and efficiently carry out an ECO process is provided. In the present invention, an ECO framework, which includes a database and Computer Aided Design (CAD) software tools, is implemented as part of the ECO process. The ECO framework...http://www.google.fr/patents/US6453454?utm_source=gb-gplus-shareBrevet US6453454 - Automatic engineering change order methodology