No. 1, Rundschrift, Nero D.R.P., Wiesbaden
No. 700, Nero D.R.P., Fabrik Wiesbaden
No. 075 F, Wiesbaden, Patent
No. 101 F, Schulfeder, DRP
No. 111 EF, Schulfeder, DRP
No. 150 EF, G, DRP
No. 201 EF, Nero Bürofeder, D.R.P., Fabrik Wiesbaden
No. 206, Steno, DRP
No. 1112 EF, DRP
No. 516 EF, Daniel's Kugelspitzfeder, D.R.P.
No. 538 EF, Bremer Börsenfeder mit Kugelspitze
No. 314, D.R.P.
No. 315, Rasterfeder, D.R.P.
No. 357, Schnellschrift-Feder, D.R.P.
No. 695, D.R.P., Notenfeder, Fabrik-Wiesbaden