Operating Instructions, ARROW PLUS TRAINER EVOLUTION RTF 2.4 GHz No. S2521
Registered patents:
Balance system:
Copyright No. 200710170488.2
Registered design No. 200720076261.7
Control system for single-rotor helicopter:
Copyright No. 200810036355.0
Registered design No. 200820057528.2
PCT patent for improved hover characteristics:
PCT No. WO/2009/062407
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