Geobat (Geomatrically Acrobatic) as i understand, was designed by Jack M. Jones and has been awarded many Recognition to this design. It's basically a flying disc or many call them UFO except without the VTOL (Vertical Take Off and Landing) capabilities. Many versions has been created and i am not aware of it's source of these versions as they range from Puller to Pusher, Single boom to twin boom designs.
More of the Geobat details can be obtain from www.geobat.com and there is also RC Plans available but not free. I got my basic plan from RCGroups, i believe it was the first posting of such design to be made and proven to fly.