* Correction*
If indeed they're Tetra labeled tanks, it looks like they're made by the conglomerate that makes Marineland products, etc:
United Pet Group, Inc.
Looks like they took over Perfecto if you recall those tanks.
SO.. if anyone cares, it looks like there's two companies that make standard, consumer grade glass aquariums these days: Aqueon (who apparently absorbed All-Glass) and United Pet Group.
I look into this stuff way too far.