Proprietà:Patent title
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Titolo del brevetto (come riportato sullo stesso).
P
Improvements in and relating to ball-point pens +
Improvements in Self-filling Fountain Pens +
Improvements in and relating to a writing instruments +
Improvements in and relating to Fountain Pens +
Improvements in and relating to Fountain Pens +
Improvements in Stylographic Fountain Pens +
Improvements in and relating to Fountain Pen Clips +
Improvements in and relating to Self-filling Fountain Pens +
Improvements in or relating to Fountain Pens +
Improvements in or relating to fountain pens +
Improvements in or relating to fountain or reservoir pens +
Improvements in or relating to Fountain Pens +
Improved casing for "sticks" of fragile and soft materials for drawing, writing and the like purposes +
Improvements in or relating to fountain pens +
Improvements in and relating to the filling of fountain pens +
Improvements in fountain and other reservoir pens +
Improved fountain pen holder +
Improvements in or relating to fountain or reservoir pens +
Improvements in fountain pens +
Improvements in fountain pens +