Inventor
BELL OLIVER A JR
US4 patents
Patents
4 patentsUS4238660ADec 9, 1980
Multi-lead servo feed system for electrical discharge machining apparatus
COLT IND OPERATING CORP9 citations71
US4152569AMay 1, 1979
Servo feed circuit for electrical discharge machining apparatus
COLT IND OPERATING CORP15 citations71
US4151388AApr 24, 1979
Current control system for electrical discharge machining apparatus
COLT IND OPERATING CORP3 citations60
US4242560ADec 30, 1980
Servo feed system for an electrical discharge machining apparatus
COLT IND OPERATING CORP1 citations50