Shingle Beam Construction Awards 29 February 2016, 07.00 Oleh: 0 Patent and innovation in construction – Dr. Ing. Ir. Eugenius Pradipto, Universitas Gadjah Mada Patent Number: P00200200062 (ID P 0026285 B) Image source: http://www.hidupkatolik.com/foto/bank/images/sajut-eugenius-pradipto-hidup-katolik.jpg