Nauheim

Schreiber & Keilwerth Musikinstrumente GmbH, a firm manufacturing saxophones are based in Nauheim as of 2010.

Eventually, D&J started to manufacture their own complete saxophones (without any Keilwerth involvement) before supplying them directly to German musical instrument retailers as well as the export market.

Saxophones manufactured by Dörfler & Jörka for distribution direct to retailers featured their own key mechanisms which were very closely modelled on Keilwerth designs, though not completely identical.

The majority of D&J saxophones were engraved with numerous different labels[5][6] including (but not limited to) the following:- Due to issues of intellectual property infringement, brand recognition and consequential loss of revenue, the Keilwerth company became increasingly aggrieved that Dörfler & Jörka were successfully copying their saxophones, which was amplified by the fact that both companies were based in the same town and had previously enjoyed a mutually beneficial business relationship.

Dörfler & Jörka were subsequently absorbed into the Keilwerth company and production of all D&J saxophones ended by 1968.

Ginsheim-Gustavsburg Bischofsheim Rüsselsheim am Main Raunheim Kelsterbach Trebur Nauheim Mörfelden-Walldorf Riedstadt Groß-Gerau Büttelborn Stockstadt am Rhein Biebesheim am Rhein Gernsheim Wiesbaden Main-Taunus-Kreis Frankfurt Rhineland-Palatinate Bergstraße (district) Offenbach (district) Darmstadt Darmstadt-Dieburg
Dörfler & Jörka tenor saxophone (engraved as 'Roxy') in its original case, dating from circa 1960s
Coat of arms of Groß-Gerau district
Coat of arms of Groß-Gerau district