Inventor

HASENACK JR MARVIN L

US3 patents

Patents

3 patents

US4879755ANov 7, 1989

Medium frequency mine communication system

STOLAR INC105 citations92

US5301082AApr 5, 1994

Current limiter circuit

STOLAR INC23 citations89

US5093929AMar 3, 1992

Medium frequency mine communication system

STOLAR INC47 citations89