ok I have read a lot about TVT so ...first TVT called TVT Carbon 7 (with Aluminium fork) 7 stands for 7 carbonfiber tubes - togehter with TVT's carbon fork they called TVT Carbon 9 or short TVT9 (i.e. the Look labeled TVT, which won 1st nd 2nd in 1986's Tour de France). Vitus do the same with their Vitus FKC 3 up to FKC 9 type
Then they brought out the 2nd version of a 9 tubes bonded frame set with this curved rear, so they called it TVT92, i.e 2nd version of TVT9
… and if joint venture between M. Tapie and TVT not finished before they came with a version with ovalized tubes and a monostay on the rear, which should be called TVT93 eventually. but it expired … so this frame set become the first TIME, the TIME Helix Equipe
I hope I could give you your answer