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.
The top plate of the cello is made of spruce or pine because of their good sound radiating qualities. The sides and back plate are made of maple. The neck, pegbox and scroll are made of maple. A thin piece of ebony is glued to the top side of the neck to form the fingerboard.