Unless you used "1000 word vocab" to qualify
the claim, in which case I
still think there may be an earlier contender. Speech recongition goes
back a long way, perhaps as far back as the 50s.
I saw a reference to a voice-activated typewriter that was patented in 1916.
(No, that is not a typo.) Unforunately the site isn't in my bookmark file
or if it is, the reference isn't easily accessible.
-- Derek