Inventions as technical innovations also belong to the creations of mind. Since they do not fit in the areas of art and literature, they do not fall under copyright protection. However, under certain circumstances a patent may be obtained for an invention (see: www.patentlaw.ch).
Inventions
Rubik‘s Cube
US Patent No. 4,410,179 from 1983. Not a work of fine art, but a technical invention.