8456: Mach-tool for removal of matrl by laser, photon beam, plasma arc proc

845610: Mach-tls f work any mat by rem of mat optd by laser/lt/photo beam pro 845620: Mach-tls for work any mat by rem of mat optd by ultrasonic processes 845630: Mach-tls f work any mat by rem of mat optd by electro-discharg proces 845691: Apparatus For Dry-Etching Patterns on Semiconductor Materials 845699: Other machine-Tools For The Removal of Any Material By Electro-Chemical 8456: Mach-tool for removal of matrl by laser, photon beam, plasma arc proc