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 compound bow is a newer and more up-to-date bow with a plethora of features. The recurve bow is a traditional bow due to its shape and has been around for hundreds of years. They are simply a single bow body with a string. They are made today of fiberglass and carbon for durability and strength.