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.
The first electrics by Ro-Pat-In were introduced in 1932 under the Electro String Instruments trademark, which later became the Electro String Instrument Corporation.
Hall, who founded the Radio and Television Equipment Company that was the exclusive distributor for Fender in the late 1940s and early 1950s.
Rickenbacker has been a family-run business ever since, as his son, John C.
In 1957, Rickenbacker introduced its first electric bass, which had many revolutionary new features.
Most notably, its neck-through-body design used one long piece of wood that ran the entire length of the bass.
Your model 4001 bass was built in November 1974 according to the serial number (almost all Rickenbackers can be dated through serialization).
It features Rickenbacker’s eye popping "cresting wave" body with a maple neck-through-body and maple body wings, cream body binding, a bound 20-fret rosewood fretboard with pearl triangle inlays, two-per-side tuners, two pickups, a white pickguard, four knobs (two volume, two tone), a three-way switch, and chrome hardware.
There is a lot of debate and general confusion over who introduced or created or invented the first electric guitar, but many consider Rickenbacker to be the first.
George Gruhn is probably the most accurate when he describes Rickenbacker as the first guitar company to successfully market electric guitars.
Hall, took control of Rickenbacker in 1984, and John’s son, Bill, works there as well.
It is important to note that Hall worked very closely with Fender, as the two have been competitors ever since.
Basically the same design as the 381V69 but a 12 string.