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In a similar form, at least on an aesthetic level, this loading system was adopted also by the [[Parker]] for the [[aerometric]]'' used in the [[51]] (which, however, provides for multiple pressures for the presence of a breather), while a substantially identical system is still used today by some ''[[converter]]'' (for example those of the [[Pilot]] low end fountain pens).<noinclude>
==Related Patents==
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