![John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Guitar art, Patent prints John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Guitar art, Patent prints](https://i.pinimg.com/originals/6d/7e/f9/6d7ef947b36fe5e8abd7ca8667e6a879.png)
John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Guitar art, Patent prints
Quarterman Resonator Guitar Cones - Remembering today John Dopyera National-Dobro resonator guitar Inventor. (Died- Jan. 3, 1988 in Grants Pass, OR.) Pictured here with his Resonator Violin. John removed the "Y" from
![The 1929 John Dopyera National Metal body Resonator 1994 guitar history article | eBay | History articles, Vintage guitars, Guitar The 1929 John Dopyera National Metal body Resonator 1994 guitar history article | eBay | History articles, Vintage guitars, Guitar](https://i.pinimg.com/originals/fe/de/a7/fedea76bc936d5ff8bde82203043f9c7.jpg)