Ключевые слова: 26, apr 26, april, background, brain, bulb, business, card, celebration, copyright, creative, creativity, day, design, education, free, holiday, icon, idea, illustration, imagination, innovation, intellectual, intellectual property, intellectual property day, international, invention, knowledge, lamp, light, light bulb, logo, name, national, patent, poster, property, property day, protection, rights, royalties, safety, science, sign, technology, world,