What date was the manufacturing company who developed the sounding rocket named Zenit-C renamed?
Zenit-C: Zenit-C was a sounding rocket developed from Oerlikon Contraves (today Rheinmetall Air Defence in Switzerland. Rheinmetall Air Defence: Rheinmetall Air Defence AG is a division of German armament manufacturer Rheinmetall, created when the company's Oerlikon Contraves unit was renamed on 1 January 2009 and integrated with Rheinmetall's other air-defence products.
1 January 2009