Adolf invested in the original National (Dobro) guitar company during the late 1920s and began supplying them with metal bodies for their Dobros.
In the early 1930s, Rickenbacker and National employees George Beauchamp and Paul Barth formed a new company, called Ro-Pat-In, to begin developing Beauchamp’s electric guitar design—a design that National was not interested in.
One look at a Rickenbacker really catches your eye, doesn’t it?
However, not many people know much about Rickenbacker basses, despite how important they have been to the bass market.
The Rickenbacker 4001 is a bass guitar that was manufactured by Rickenbacker as a two-pickup "deluxe" version of their first production bass, the single-pickup model 4000.