| http://www.w3.org/ns/prov#value | - Another advantage of this apparatus is that the spacer frames are held by the retractible support pins 16 before being fitted to the frame 8 of the apparatus so that, during the period of time in which a spacer frame 19 is being inserted into the apparatus, a pane of glass coming for example from a washing station is simply conveyed through the apparatus, and the frame is first fitted to the next
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