Leo Fender invented the Fender bass, making many significant changes over many models and years. And no, he didn't set up shop in NYC to refurbish his tired old basses for a prolific performance/studio trade. He was far too busy for that.
True and actual Fender innovation and transformation? Witness Fender's evolution in bass and electronics in the original company, and in subsequent Leo Fender endeavors of Music Man and G&L. That same innovation (across all 3 companies) has been copied and incorporated by a plethora of companies/luthiers/kit assemblers/brands. All anyone needs to do is look at Fender patents/copyrights/trademarks to witness the true genius of Leo Fender, whose legacy is copied to this day.
None of the Fender copiers would be known without Leo Fender's intelligence, innovation, and prolific design. That the copiers never acknowledge this, several even taking credit for Leo's designs, is just part of copier facade and charade.