I worked for a number of years with an IT company, setting up and networking computers for conferences, seminars, examinations, etc. I would also do tech support during the events, to make sure everything works in proper order and be able to quickly fix anything that went wrong. As well, answer questions from anyone using our computers. I was an employee of the company but hired out to organizations like Texas Instruments, the G7 conference (now the G

, a main political party's leadership convention, etc. Should that be left for the interview process instead of appearing on a resume? Should it be mentioned at all? I presume that such name dropping would demonstrate that I can work with top organizations in a professional manner and provide service that such companies would demand.
So, should such companies be mentioned on a resume or should I wait until the interview process to mention them? Or should I maintain a level of privacy (though, I never signed any privacy agreements and the company I worked for have been acknowledged publicly for their support)?
Thanks for any suggestions!