A planar one-piece support member having a tab member adapted to be disposed outwardly from the plane of said support member to define a bifurcated structure which enables the support of portable furniture, such as table and chairs, said support member being provided with means to enable said support...http://www.google.com.au/patents/US4202581?utm_source=gb-gplus-sharePatent US4202581 - Support means for portable furniture
