slide 2 of 6. When most people ask 'how long does a patent last', they are inquiring about utility patents. A utility patent is the patent granted for new machines, processes, products, and scientific formulas such as medicines or new elemental compounds.
The Stick. The largest part of the violin bow is the stick,with the best ones made of Pernambuco wood from Northeast Brazil, although carbon fiber is another quality choice.he Hair. The hair is the part of the violin bow that touches the strings and produces sound. Horse-hair is the traditional favorite, but synthetic hairs are also used for cheaper bows.
Judging by mine, the body, neck, pegs and bridge are all carved out of wood, with some bone (or substitute) inlay at the head and on the pegs. The bow is made from bamboo, with black or white horsehair (use only a dark rosin on it).