Ryūbi Seisakusho (隆美製作所) was a Japanese camera maker, which made the Monade Flex in 1953 and the Rubyflex. Nothing else is known about this company.
References/External Links[]
http://camera-wiki.org/wiki/Ry%C5%ABbi
All credit goes back to Camera Wiki Org for i do not own any of these information nor the pictures provided in this page