a transport assembly positioned on opposite sides of said injection molding device and said first and second supports and at a level corresponding to the position of one of said supports when in the first open position, said {HEAD ~ transport assembly} including {TAIL ~ means} for removing the removably mounted holder assembly from the support on which it is removably mounted and for placing another holder assembly on the same support 
including
a transport assembly positioned on opposite sides of said injection molding device and said first and second supports and at a level corresponding to the position of one of said supports when in the first open position , said { HEAD ~ transport assembly } including { TAIL ~ means } for removing the removably mounted holder assembly from the support on which it is removably mounted and for placing another holder assembly on the same support
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