Translations:Stylomine/7/en

But the most significant invention of the company, which is its distinguishing feature, is the revolutionary accordion filler, patented in 1938 (nº FR-854177). It's a peculiar variant of a breather tube filler allowing a very large ink capacity, in which the pumping was carried out thanks to an ink sac with accordion walls, and in which the bulb was replaced by a button consisting of a glass ampule inserted to slide in the rear end of the body, that you could press to make the pumping, and also use to see the remaining ink.