Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Process for manufacturing pen nibs +
Safety clasp +
Retaining clasp +
Fountain pen +
Fountain pen +
Security clip +
Fountain pen +
Fountain pen +
Adjustable eraser holder +
Fountain pen +
Fountain pen feed +
Clip and cap for mechanical pencils, fountain pens, and the like +
Mechanical pencil +
Mechanical pencil +
Mechanical pencil +
Mechanical pencil +
Fountain pen +
Fountain pen +
Ink feeding means for writing pens +
Fountain pen +