259Agro Arca: Prelog, Croatia 2021 Japan Design, Idea and Invention Expo The 5th China (Shanghai)InternationalInvention & InnovationExpo International Inventionand Innovation ShowINTARG 2021 International Invention, Innovation & Technology Exhibition International Perlis Engineering Research & Learning Innovation Symposium (i-PERLIS 2021) XXIII Moscow International Salon of Inventions and Innovative Technologies ARCHIMEDES European Exhibition of Creativity and Innovation World Invention Creativity Olympics Inventions Geneva 2021 Registration Inventions Geneva 2021 Registration
