Found this on eBay awhile ago, can't remember if it even said what company made this.
While it looks purpose-built to me it could be adapted from another pack system. It adds a redundant frame that seems to give an extra inch in frame height as well as some increased belt stability. The shoulder straps and lumbar pad give almost full pack padding, and the system attempts to use load lifters but I doubt the frame is tall enough to utilize them unless the user is quite short.
Very curious about the story behind this, will update if further research uncovers anything.