Tri-Fold Question

[tonyccw]

OK, aside from the Cold Steel Triple Action Folder, who elses makes a Tri-Fold knife? Also known as a Jacob's Ladder knife.

I've recently picked up a version from the Urkaines (based on the one made by Fred Perrin), as well as the one made by Phil Boguszewski, from Bladeart, and would like to obtain more. Any leads would be greatly appreciated.