ఆపరేటింగ్ సిస్టమ్ UNIX ________ ద్వారా ట్రేడ్ మార్క్ చేయబడింది:

UNIX was developed in 1969 at AT&T's Bell Laboratories by Ken Thompson and Dennis Ritchie, and the UNIX trademark originated there. (Today the trademark is held by The Open Group.)