Dresser-Rand (DRC) DEFA14A Additional proxy soliciting materials

Exhibit 2.2

Dresser-Rand shall in no case have the right to receive payments in excess of any payment due and payable or that would become due and payable under the Merger Agreement. In any event, Dresser-Rand shall not have more rights than if Siemens Parent were the sole party of the Merger Agreement.

Sincerely, /s/ Karl-Heinz Seibert Karl-Heinz Seibert Corporate Vice President Head of Mergers & Acquisitions	/s/ Dr. Andreas Hoffmann Dr. Andreas Hoffmann General Counsel of Siemens AG
Acknowledged and agreed: /s/ Mark F. Mai Mark F. Mai

Siemens Aktiengesellschaft: Vorsitzender des Aufsichtsrats: Gerhard Cromme; Vorstand: Joe Kaeser, Vorsitzender: Roland Busch, Lisa Davis, Klaus Helmrich, Hermann Requardt, Siegfried Russwurm, Ralf P. Thomas; Sitz der Gesellschaft: Berlin und München, Deutschland; Registergericht: Berlin Charlottenburg, HRB 12300, München, HRB 6684; WEEE-Reg.-Nr. DE 23691322