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In fact, the ''"[[Lucky Curve]]"'' was simply a good feeder, which remained in production until 1928, and was used as a trademark for a number of pens, but there are doubts that the curved form actually had the effect to avoid the accumulation of ink, because much repairers cutted it, because the curved part makes it difficult to reinsert it between the nib and section.

In fact, the ''"[[Lucky Curve]]"'' was simply a good feeder, which remained in production until [[1928]], and was used as a trademark for a number of pens, but there are doubts that the curved form actually had the effect to avoid the accumulation of ink, because much repairers cutted it, because the curved part makes it difficult to reinsert it between the nib and section.