characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance

Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated > characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance

Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated (specially for reversing F02D27/00) > characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance