US Patent on Net lock Girder (Pub no 8661764) – Innovative lattice girder system for bridges, launching girders, Foot Over Bridges, Communication Towers etc.
Indian Patent applied for Composite Stone Panels ( V V Rangarao & Shankar Naryan)
Indian Patent applied for Flat Strip Stepped slab ( V V Rangarao & N V Ramana rao)
Indian Patent applied for Composite structural mosaic Panels ( V V Rangarao & Shankar Naryan)
