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Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments
(AREA)
Abstract
Improved ball writer pen, characterized in that it lacks a spare part and comprises, as an ink tank, an axial drill made in the body of the pen from one head to the other, this conductor is closed at the bottom by the body carrying the ball which has a short tubular coupling pin for this purpose. (Machine-translation by Google Translate, not legally binding)