The eenkai, on their home world Throndar, are credited with inventing this type of engine. When a large group of eenkai left their world, they used these engines to power their ships, taking them into the Void, where they would settle on the world Gebs Rain.
Tarsilja Lattice engines are no longer made. This is because on Throndar, Ptah Teardrops are considered contraband. The eenkai of this magic-dead world locked away all of them way, making possession of them a high crime.