Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Fountain pen +
Self-feeding pencil +
Combination instrument +
Fountain-pen +
Self-filling fountain-pen +
Fountain-pen +
Cap-clip for fountain-pens +
Fountain-pen +
Fountain-pen +
Pen-point holder +
Fountain pen +
Fountain-pen +
Improvement in alloys for the manufacture of pens +
Fountain-pen +
Self-filling fountain-pen +
Fountain-pen +
Fountain-pen cap +
Lever-filler for fountain-pens +
Pencil-clip +
Fountain-pen +