Looks like a standard Leviton, although it also looks like they used the "push-n-pray" terminals instead of the screw terminals.
It looks to me like a Leviton 5320. However, let's not forget that GE for a time distributed its own 5320, which was so close a copy of the Leviton that I expected Leviton to sue (maybe they did). If you look closely, you can see where the 'Quickwire' openings in the base were closed in to allow 14 gage but to prevent use of 12 gage. The picture is blurry, and I can't really say there are still leads in the undamaged plug-ins on the far side from the camera. The surviving plug-in toward the camera is clearly empty.
I used to use these routinely, taking comfort in the UL listing. These days, I go directly to commercial grade.
