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What do these markings on DDR mean?

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Jan 24, 2002
I just checked my memory stick to see if I really have a crucial memory stick.
here's what I found on it:

0142 _ 4-2
mt _ 46V16M8
TG _ -75A

I was told that it's made by the same company that makes crucial.
I guess that's micron tech.
Can anyone tell me what they mean and if it's any good to use to o/c?
Just did a search on google and found out that it is the same chip as the crucial memory chip.
Also the 46V16M8 is the same acronym that the Corsair PC2400 300mhz DDR chip also uses. Corsair is also made my Micron Tech.
Couldn't find anything else that would explain the rest of the markings.
mt=Micron Technology....I was in dram manufacturing w/ MT, Crucial only sells MT ram....they also have AMS & Spectek manufacturing ram for them.