TY - PAT AU - Olah, L AU - Friedler, Ferenc AU - Kovács, Zoltán TI - System and method for monitoring computer usage CY - Country:10017(13) PY - 2002 UR - https://m2.mtmt.hu/api/publication/1049739 ID - 1049739 N1 - https://www.google.hu/patents/US6446119?dq=US+6446119&hl=en&sa=X&ved=0CB4Q6AEwAGoVChMIqPqXtp6YyAIVSNksCh0sCwXf#classifications LA - English DB - MTMT ER -