Has Nobels also developed for other companies or built in OEM?
Yes, in the early days some models were offered in OEM and even developed together for Fender (MS8).
What means OEM? Original Equipment Manufacturer
An original equipment manufacturer (OEM) traditionally is defined as a company whose goods are used as components in the products of another company/distribution, which then sells the finished item to users under their own brand.
Here is a small overview of the companies:
Fender, Rhino, Series10, JHS, Phonic Rock Box, Hello Kitty, Shadow, Rok Axe, Impact, Kramer, Dean…