Please do not put post 1960 Bell Helicopters and the word 'Invent' in the same sentence. Bell is very good at recycling old kit and stuffing it up eg: AH-1Z (still waiting) UH1Y (still waiting), ARH (still waiting) etc etc. Their lack of inventiveness continues to amaze me.
Sad to see a pretty decent piece of Australian Military History move on
, though about time. Our soldiers need more and better helicopters yesterday!