![John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Patent prints, Guitar art John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Patent prints, Guitar art](https://i.pinimg.com/474x/6d/7e/f9/6d7ef947b36fe5e8abd7ca8667e6a879--mandolin-banjos.jpg)
John Dopyera – "Guitar Cones." In 1930, on June 10, John Dopyera was granted a patent for a stringed instrument. It fe… | Guitar drawing, Patent prints, Guitar art
Why I Love National Guitars - These are the DOPYERA BROTHERS posing with some Dobro guitars and a mandolin, probably in the 1970's. JOHN DOPYERA invented the resophonic guitar in the 1920's (
![The 1929 John Dopyera National Metal body Resonator 1994 guitar history article #Dopyera | History articles, Guitar, Vintage guitars The 1929 John Dopyera National Metal body Resonator 1994 guitar history article #Dopyera | History articles, Guitar, Vintage guitars](https://i.pinimg.com/originals/fe/de/a7/fedea76bc936d5ff8bde82203043f9c7.jpg)