A numerically controlled machining system which stores in a memory, a machining program having machining pattern commands for specifying machining patterns, tool commands for specifying tools, and positional information commands for specifying positional information for the tools. A selecting device...http://www.google.de/patents/US4591989?utm_source=gb-gplus-sharePatent US4591989 - System for displaying tool parameters of tools utilized in a machining process
