Filed: May 26, 1988 COMPUTER GRAPHICS SOFTWARE PROGRAM THAT SIMULATES THE PROCESS OF METAL REMOVAL BY NUMERICALLY CONTROLLED MACHINE TOOLS Owned by:CGTECH Serial Number:73731003
Filed: March 24, 1992 computer programs in the field of computer simulation and computer format and/or data type conversion, and users manuals Owned by:CGTECH Serial Number:74258638
Filed: August 5, 1992 computer programs for use in the field of computer simulation and computer aided manufacturing and design; and instruction… Owned by:CGTECH Serial Number:74302477
Filed: April 29, 1996 computer software for use in the field of computer simulation and computer aided manufacturing, and manuals sold as a unit… Owned by:CGTECH Serial Number:75095903