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.
Originally, violin strings were made of gut.In the 18th century, violinists began to use G strings wound with metal wire in order to improve their tone. Gradually, people began to use wound D and A strings too. Each violin string had a core of gut, and the E string was still usually all gut. This continued until the mid 20th century, when new developments in string making technology allowed the use of nylon core and steel strings.