No, if you read it, you'll see "Floyd Rose Original is the oldest model STILL IN PRODUCTION". the Rockinger has been out of production for years, however it WAS first, before the Floyd.well i found out that
"In late 1981, early 82, Kramer introduced the Rockinger trem which was one of the first locking nut trems"
but according to another website
"Floyd Rose Original is the oldest model still in production. Since 1977, production models bearing this name are mostly the same as the first model, with only minor change"
so it seems floyd was out first, but who is the first documented case? someone here has to know