Over here you will find free vector brand logos in Illustrator, EPS, Corel Draw format..

Brand Vector Logos start with 'T' letter

Tern
TF-Metal
Tomb Raider
The Tonight Show
Tablita de Pirané Formosa
Trevo Drywall
Total Sanity
Twix
TSV-DJK Wiesentheid
Telcel
Tinta Invisible Revista Flagrante