What difference of "High Stability Tremolo System"?

[Watersan]

Normally, Axis tremolo bridge will be stamped on the rare that "Licensed Under Floyd Rose Patents", isn't it?
But my second Axis that birth on 10/2004 is stamping "High Stability Tremolo System" insteaded...
What's wrong about it? How does it different of each others ?

Thank you in advance

 

[OrangeChannel]

Nothing....Floyd's patents simply expired...so the "Licensed" bit need not be applied anymore...