Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Improvements in fountain pens +
Improvements in stylographs +
Improvements in or relating to self-filling fountain pens +
Improvements in self-filling fountain pens +
A device for use in the preparation of ink +
Fountain pen +
Fountain pen +
Fountain pen +
Improvements in or relating to fountain pens, propelling pencils and the like +
Improvements in or relating to ink reservoir pens +
Improvements in flow testing apparatus +
Improvements in and relating to immersion testing apparatus +
Improvements in or relating to fountain pens +
Fountain pens +
Self-filling fountain pens +
Improvements in or relating to Pens +
Fountain pen +
Improvements in and relating to Self-filling Fountain Pens +
Improvements in or relating to Fountain Pens +
Improvements in and relating to self-filling fountain pens +